Home / 31,639.74-47,465.07-12,929.94

Finding the Fourth Proportional to 31,639.74, 47,465.07 and 12,929.94

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Solution

The fourth proportional to 31,639.74, 47,465.07 and 12,929.94 is: 19,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.74 : 47,465.07 = 12,929.94 : x
  2. Step 2: Convert to fraction form
    31,639.74/47,465.07 = 12,929.94/x
  3. Step 3: Cross multiply
    31,639.74x = 47,465.07 × 12,929.94
  4. Step 4: Simplify right side
    31,639.74x = 613,720,507.20
  5. Step 5: Solve for x
    x = 613,720,507.20/31,639.74
  6. Step 6: Final answer
    x = 19,397.14

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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.