Home / 28,440.72-42,655.32-7,659.36

Finding the Fourth Proportional to 28,440.72, 42,655.32 and 7,659.36

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Solution

The fourth proportional to 28,440.72, 42,655.32 and 7,659.36 is: 11,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.72 : 42,655.32 = 7,659.36 : x
  2. Step 2: Convert to fraction form
    28,440.72/42,655.32 = 7,659.36/x
  3. Step 3: Cross multiply
    28,440.72x = 42,655.32 × 7,659.36
  4. Step 4: Simplify right side
    28,440.72x = 326,712,451.80
  5. Step 5: Solve for x
    x = 326,712,451.80/28,440.72
  6. Step 6: Final answer
    x = 11,487.49

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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.