Home / 14,721.60-20,317.16-8,432.76

Finding the Fourth Proportional to 14,721.60, 20,317.16 and 8,432.76

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Solution

The fourth proportional to 14,721.60, 20,317.16 and 8,432.76 is: 11,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.60 : 20,317.16 = 8,432.76 : x
  2. Step 2: Convert to fraction form
    14,721.60/20,317.16 = 8,432.76/x
  3. Step 3: Cross multiply
    14,721.60x = 20,317.16 × 8,432.76
  4. Step 4: Simplify right side
    14,721.60x = 171,329,734.16
  5. Step 5: Solve for x
    x = 171,329,734.16/14,721.60
  6. Step 6: Final answer
    x = 11,637.98

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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.