Home / 14,607.60-20,155.48-8,639.44

Finding the Fourth Proportional to 14,607.60, 20,155.48 and 8,639.44

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Solution

The fourth proportional to 14,607.60, 20,155.48 and 8,639.44 is: 11,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.60 : 20,155.48 = 8,639.44 : x
  2. Step 2: Convert to fraction form
    14,607.60/20,155.48 = 8,639.44/x
  3. Step 3: Cross multiply
    14,607.60x = 20,155.48 × 8,639.44
  4. Step 4: Simplify right side
    14,607.60x = 174,132,060.13
  5. Step 5: Solve for x
    x = 174,132,060.13/14,607.60
  6. Step 6: Final answer
    x = 11,920.65

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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.