Home / 28,008.27-42,000.10-8,288.36

Finding the Fourth Proportional to 28,008.27, 42,000.10 and 8,288.36

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Solution

The fourth proportional to 28,008.27, 42,000.10 and 8,288.36 is: 12,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.27 : 42,000.10 = 8,288.36 : x
  2. Step 2: Convert to fraction form
    28,008.27/42,000.10 = 8,288.36/x
  3. Step 3: Cross multiply
    28,008.27x = 42,000.10 × 8,288.36
  4. Step 4: Simplify right side
    28,008.27x = 348,111,948.84
  5. Step 5: Solve for x
    x = 348,111,948.84/28,008.27
  6. Step 6: Final answer
    x = 12,428.90

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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.