Home / 20,312,596.80-28,031,417.28-11,145,308.40

Finding the Fourth Proportional to 20,312,596.80, 28,031,417.28 and 11,145,308.40

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Solution

The fourth proportional to 20,312,596.80, 28,031,417.28 and 11,145,308.40 is: 15,380,544.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312,596.80 : 28,031,417.28 = 11,145,308.40 : x
  2. Step 2: Convert to fraction form
    20,312,596.80/28,031,417.28 = 11,145,308.40/x
  3. Step 3: Cross multiply
    20,312,596.80x = 28,031,417.28 × 11,145,308.40
  4. Step 4: Simplify right side
    20,312,596.80x = 312,418,790,474,689.19
  5. Step 5: Solve for x
    x = 312,418,790,474,689.19/20,312,596.80
  6. Step 6: Final answer
    x = 15,380,544.08

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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.