Home / 12,153.13-16,772.51-7,117.04

Finding the Fourth Proportional to 12,153.13, 16,772.51 and 7,117.04

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Solution

The fourth proportional to 12,153.13, 16,772.51 and 7,117.04 is: 9,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.13 : 16,772.51 = 7,117.04 : x
  2. Step 2: Convert to fraction form
    12,153.13/16,772.51 = 7,117.04/x
  3. Step 3: Cross multiply
    12,153.13x = 16,772.51 × 7,117.04
  4. Step 4: Simplify right side
    12,153.13x = 119,370,624.57
  5. Step 5: Solve for x
    x = 119,370,624.57/12,153.13
  6. Step 6: Final answer
    x = 9,822.21

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Double scale
Find fourth proportional to 12,154.13, 16,773.89 and 7,118.04
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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.