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Finding the Fourth Proportional to 28,457.58, 42,691.01 and 10,689.63

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Solution

The fourth proportional to 28,457.58, 42,691.01 and 10,689.63 is: 16,036.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.58 : 42,691.01 = 10,689.63 : x
  2. Step 2: Convert to fraction form
    28,457.58/42,691.01 = 10,689.63/x
  3. Step 3: Cross multiply
    28,457.58x = 42,691.01 × 10,689.63
  4. Step 4: Simplify right side
    28,457.58x = 456,351,101.23
  5. Step 5: Solve for x
    x = 456,351,101.23/28,457.58
  6. Step 6: Final answer
    x = 16,036.19

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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.