Home / 28,045.86-42,069.16-9,325.90

Finding the Fourth Proportional to 28,045.86, 42,069.16 and 9,325.90

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Solution

The fourth proportional to 28,045.86, 42,069.16 and 9,325.90 is: 13,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.86 : 42,069.16 = 9,325.90 : x
  2. Step 2: Convert to fraction form
    28,045.86/42,069.16 = 9,325.90/x
  3. Step 3: Cross multiply
    28,045.86x = 42,069.16 × 9,325.90
  4. Step 4: Simplify right side
    28,045.86x = 392,332,779.24
  5. Step 5: Solve for x
    x = 392,332,779.24/28,045.86
  6. Step 6: Final answer
    x = 13,988.97

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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.