Home / 15,125,123.25-20,872,918.89-8,249,605.38

Finding the Fourth Proportional to 15,125,123.25, 20,872,918.89 and 8,249,605.38

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Solution

The fourth proportional to 15,125,123.25, 20,872,918.89 and 8,249,605.38 is: 11,384,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125,123.25 : 20,872,918.89 = 8,249,605.38 : x
  2. Step 2: Convert to fraction form
    15,125,123.25/20,872,918.89 = 8,249,605.38/x
  3. Step 3: Cross multiply
    15,125,123.25x = 20,872,918.89 × 8,249,605.38
  4. Step 4: Simplify right side
    15,125,123.25x = 172,193,343,971,247.62
  5. Step 5: Solve for x
    x = 172,193,343,971,247.62/15,125,123.25
  6. Step 6: Final answer
    x = 11,384,591.13

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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.