Home / 13,511.12-18,644.56-7,543.17

Finding the Fourth Proportional to 13,511.12, 18,644.56 and 7,543.17

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Solution

The fourth proportional to 13,511.12, 18,644.56 and 7,543.17 is: 10,409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.12 : 18,644.56 = 7,543.17 : x
  2. Step 2: Convert to fraction form
    13,511.12/18,644.56 = 7,543.17/x
  3. Step 3: Cross multiply
    13,511.12x = 18,644.56 × 7,543.17
  4. Step 4: Simplify right side
    13,511.12x = 140,639,056.79
  5. Step 5: Solve for x
    x = 140,639,056.79/13,511.12
  6. Step 6: Final answer
    x = 10,409.13

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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.