Home / 20,208,681.80-30,313,022.70-9,978,442.55

Finding the Fourth Proportional to 20,208,681.80, 30,313,022.70 and 9,978,442.55

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Solution

The fourth proportional to 20,208,681.80, 30,313,022.70 and 9,978,442.55 is: 14,967,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208,681.80 : 30,313,022.70 = 9,978,442.55 : x
  2. Step 2: Convert to fraction form
    20,208,681.80/30,313,022.70 = 9,978,442.55/x
  3. Step 3: Cross multiply
    20,208,681.80x = 30,313,022.70 × 9,978,442.55
  4. Step 4: Simplify right side
    20,208,681.80x = 302,476,755,528,795.88
  5. Step 5: Solve for x
    x = 302,476,755,528,795.88/20,208,681.80
  6. Step 6: Final answer
    x = 14,967,663.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.