Home / 14,720.48-20,314.42-8,432.72

Finding the Fourth Proportional to 14,720.48, 20,314.42 and 8,432.72

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Solution

The fourth proportional to 14,720.48, 20,314.42 and 8,432.72 is: 11,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.48 : 20,314.42 = 8,432.72 : x
  2. Step 2: Convert to fraction form
    14,720.48/20,314.42 = 8,432.72/x
  3. Step 3: Cross multiply
    14,720.48x = 20,314.42 × 8,432.72
  4. Step 4: Simplify right side
    14,720.48x = 171,305,815.82
  5. Step 5: Solve for x
    x = 171,305,815.82/14,720.48
  6. Step 6: Final answer
    x = 11,637.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.