Home / 31,088.00-42,901.45-16,940.81

Finding the Fourth Proportional to 31,088.00, 42,901.45 and 16,940.81

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Solution

The fourth proportional to 31,088.00, 42,901.45 and 16,940.81 is: 23,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,088.00 : 42,901.45 = 16,940.81 : x
  2. Step 2: Convert to fraction form
    31,088.00/42,901.45 = 16,940.81/x
  3. Step 3: Cross multiply
    31,088.00x = 42,901.45 × 16,940.81
  4. Step 4: Simplify right side
    31,088.00x = 726,785,378.08
  5. Step 5: Solve for x
    x = 726,785,378.08/31,088.00
  6. Step 6: Final answer
    x = 23,378.32

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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.