Home / 15,211.02-21,001.08-13,614.90

Finding the Fourth Proportional to 15,211.02, 21,001.08 and 13,614.90

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Solution

The fourth proportional to 15,211.02, 21,001.08 and 13,614.90 is: 18,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.02 : 21,001.08 = 13,614.90 : x
  2. Step 2: Convert to fraction form
    15,211.02/21,001.08 = 13,614.90/x
  3. Step 3: Cross multiply
    15,211.02x = 21,001.08 × 13,614.90
  4. Step 4: Simplify right side
    15,211.02x = 285,927,604.09
  5. Step 5: Solve for x
    x = 285,927,604.09/15,211.02
  6. Step 6: Final answer
    x = 18,797.40

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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.