Home / 15,548.40-21,456.60-8,474.72

Finding the Fourth Proportional to 15,548.40, 21,456.60 and 8,474.72

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Solution

The fourth proportional to 15,548.40, 21,456.60 and 8,474.72 is: 11,695.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,548.40 : 21,456.60 = 8,474.72 : x
  2. Step 2: Convert to fraction form
    15,548.40/21,456.60 = 8,474.72/x
  3. Step 3: Cross multiply
    15,548.40x = 21,456.60 × 8,474.72
  4. Step 4: Simplify right side
    15,548.40x = 181,838,677.15
  5. Step 5: Solve for x
    x = 181,838,677.15/15,548.40
  6. Step 6: Final answer
    x = 11,695.01

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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.