Home / 20,513,031,666.68-28,308,868,407.23-11,357,560,431.39

Finding the Fourth Proportional to 20,513,031,666.68, 28,308,868,407.23 and 11,357,560,431.39

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Solution

The fourth proportional to 20,513,031,666.68, 28,308,868,407.23 and 11,357,560,431.39 is: 15,673,923,235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513,031,666.68 : 28,308,868,407.23 = 11,357,560,431.39 : x
  2. Step 2: Convert to fraction form
    20,513,031,666.68/28,308,868,407.23 = 11,357,560,431.39/x
  3. Step 3: Cross multiply
    20,513,031,666.68x = 28,308,868,407.23 × 11,357,560,431.39
  4. Step 4: Simplify right side
    20,513,031,666.68x = 321,519,683,679,342,362,624
  5. Step 5: Solve for x
    x = 321,519,683,679,342,362,624/20,513,031,666.68
  6. Step 6: Final answer
    x = 15,673,923,235.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.