Home / 31,068.68-42,875.14-16,921.64

Finding the Fourth Proportional to 31,068.68, 42,875.14 and 16,921.64

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Solution

The fourth proportional to 31,068.68, 42,875.14 and 16,921.64 is: 23,352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,068.68 : 42,875.14 = 16,921.64 : x
  2. Step 2: Convert to fraction form
    31,068.68/42,875.14 = 16,921.64/x
  3. Step 3: Cross multiply
    31,068.68x = 42,875.14 × 16,921.64
  4. Step 4: Simplify right side
    31,068.68x = 725,517,684.03
  5. Step 5: Solve for x
    x = 725,517,684.03/31,068.68
  6. Step 6: Final answer
    x = 23,352.06

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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.