Home / 31,037.26-42,831.14-16,890.12

Finding the Fourth Proportional to 31,037.26, 42,831.14 and 16,890.12

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Solution

The fourth proportional to 31,037.26, 42,831.14 and 16,890.12 is: 23,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,037.26 : 42,831.14 = 16,890.12 : x
  2. Step 2: Convert to fraction form
    31,037.26/42,831.14 = 16,890.12/x
  3. Step 3: Cross multiply
    31,037.26x = 42,831.14 × 16,890.12
  4. Step 4: Simplify right side
    31,037.26x = 723,423,094.34
  5. Step 5: Solve for x
    x = 723,423,094.34/31,037.26
  6. Step 6: Final answer
    x = 23,308.21

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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.