Home / 28,475.72-42,712.26-8,753.36

Finding the Fourth Proportional to 28,475.72, 42,712.26 and 8,753.36

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Solution

The fourth proportional to 28,475.72, 42,712.26 and 8,753.36 is: 13,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.72 : 42,712.26 = 8,753.36 : x
  2. Step 2: Convert to fraction form
    28,475.72/42,712.26 = 8,753.36/x
  3. Step 3: Cross multiply
    28,475.72x = 42,712.26 × 8,753.36
  4. Step 4: Simplify right side
    28,475.72x = 373,875,788.19
  5. Step 5: Solve for x
    x = 373,875,788.19/28,475.72
  6. Step 6: Final answer
    x = 13,129.63

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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.