Home / 19,945.70-29,918.55-15,280.10

Finding the Fourth Proportional to 19,945.70, 29,918.55 and 15,280.10

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Solution

The fourth proportional to 19,945.70, 29,918.55 and 15,280.10 is: 22,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.70 : 29,918.55 = 15,280.10 : x
  2. Step 2: Convert to fraction form
    19,945.70/29,918.55 = 15,280.10/x
  3. Step 3: Cross multiply
    19,945.70x = 29,918.55 × 15,280.10
  4. Step 4: Simplify right side
    19,945.70x = 457,158,435.86
  5. Step 5: Solve for x
    x = 457,158,435.86/19,945.70
  6. Step 6: Final answer
    x = 22,920.15

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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.