Home / 10,456.80-15,672.40-4,607.20

Finding the Fourth Proportional to 10,456.80, 15,672.40 and 4,607.20

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Solution

The fourth proportional to 10,456.80, 15,672.40 and 4,607.20 is: 6,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,456.80 : 15,672.40 = 4,607.20 : x
  2. Step 2: Convert to fraction form
    10,456.80/15,672.40 = 4,607.20/x
  3. Step 3: Cross multiply
    10,456.80x = 15,672.40 × 4,607.20
  4. Step 4: Simplify right side
    10,456.80x = 72,205,881.28
  5. Step 5: Solve for x
    x = 72,205,881.28/10,456.80
  6. Step 6: Final answer
    x = 6,905.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.