Home / 13,724.61-18,948.09-8,693.12

Finding the Fourth Proportional to 13,724.61, 18,948.09 and 8,693.12

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Solution

The fourth proportional to 13,724.61, 18,948.09 and 8,693.12 is: 12,001.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.61 : 18,948.09 = 8,693.12 : x
  2. Step 2: Convert to fraction form
    13,724.61/18,948.09 = 8,693.12/x
  3. Step 3: Cross multiply
    13,724.61x = 18,948.09 × 8,693.12
  4. Step 4: Simplify right side
    13,724.61x = 164,718,100.11
  5. Step 5: Solve for x
    x = 164,718,100.11/13,724.61
  6. Step 6: Final answer
    x = 12,001.66

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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.