Home / 13,755.04-18,988.95-8,724.40

Finding the Fourth Proportional to 13,755.04, 18,988.95 and 8,724.40

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Solution

The fourth proportional to 13,755.04, 18,988.95 and 8,724.40 is: 12,044.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.04 : 18,988.95 = 8,724.40 : x
  2. Step 2: Convert to fraction form
    13,755.04/18,988.95 = 8,724.40/x
  3. Step 3: Cross multiply
    13,755.04x = 18,988.95 × 8,724.40
  4. Step 4: Simplify right side
    13,755.04x = 165,667,195.38
  5. Step 5: Solve for x
    x = 165,667,195.38/13,755.04
  6. Step 6: Final answer
    x = 12,044.11

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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.