Home / 31,432.16-43,385.58-18,694.32

Finding the Fourth Proportional to 31,432.16, 43,385.58 and 18,694.32

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Solution

The fourth proportional to 31,432.16, 43,385.58 and 18,694.32 is: 25,803.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,432.16 : 43,385.58 = 18,694.32 : x
  2. Step 2: Convert to fraction form
    31,432.16/43,385.58 = 18,694.32/x
  3. Step 3: Cross multiply
    31,432.16x = 43,385.58 × 18,694.32
  4. Step 4: Simplify right side
    31,432.16x = 811,063,915.91
  5. Step 5: Solve for x
    x = 811,063,915.91/31,432.16
  6. Step 6: Final answer
    x = 25,803.64

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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.