Home / 28,657.28-42,990.23-8,937.38

Finding the Fourth Proportional to 28,657.28, 42,990.23 and 8,937.38

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Solution

The fourth proportional to 28,657.28, 42,990.23 and 8,937.38 is: 13,407.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.28 : 42,990.23 = 8,937.38 : x
  2. Step 2: Convert to fraction form
    28,657.28/42,990.23 = 8,937.38/x
  3. Step 3: Cross multiply
    28,657.28x = 42,990.23 × 8,937.38
  4. Step 4: Simplify right side
    28,657.28x = 384,219,829.19
  5. Step 5: Solve for x
    x = 384,219,829.19/28,657.28
  6. Step 6: Final answer
    x = 13,407.41

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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.