Home / 15,561.20-21,474.60-9,274.16

Finding the Fourth Proportional to 15,561.20, 21,474.60 and 9,274.16

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Solution

The fourth proportional to 15,561.20, 21,474.60 and 9,274.16 is: 12,798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.20 : 21,474.60 = 9,274.16 : x
  2. Step 2: Convert to fraction form
    15,561.20/21,474.60 = 9,274.16/x
  3. Step 3: Cross multiply
    15,561.20x = 21,474.60 × 9,274.16
  4. Step 4: Simplify right side
    15,561.20x = 199,158,876.34
  5. Step 5: Solve for x
    x = 199,158,876.34/15,561.20
  6. Step 6: Final answer
    x = 12,798.43

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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.