Home / 15,418.92-21,280.20-9,047.06

Finding the Fourth Proportional to 15,418.92, 21,280.20 and 9,047.06

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Solution

The fourth proportional to 15,418.92, 21,280.20 and 9,047.06 is: 12,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.92 : 21,280.20 = 9,047.06 : x
  2. Step 2: Convert to fraction form
    15,418.92/21,280.20 = 9,047.06/x
  3. Step 3: Cross multiply
    15,418.92x = 21,280.20 × 9,047.06
  4. Step 4: Simplify right side
    15,418.92x = 192,523,094.58
  5. Step 5: Solve for x
    x = 192,523,094.58/15,418.92
  6. Step 6: Final answer
    x = 12,486.16

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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.