Home / 10,461.54-15,690.40-4,221.30

Finding the Fourth Proportional to 10,461.54, 15,690.40 and 4,221.30

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Solution

The fourth proportional to 10,461.54, 15,690.40 and 4,221.30 is: 6,331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,461.54 : 15,690.40 = 4,221.30 : x
  2. Step 2: Convert to fraction form
    10,461.54/15,690.40 = 4,221.30/x
  3. Step 3: Cross multiply
    10,461.54x = 15,690.40 × 4,221.30
  4. Step 4: Simplify right side
    10,461.54x = 66,233,885.52
  5. Step 5: Solve for x
    x = 66,233,885.52/10,461.54
  6. Step 6: Final answer
    x = 6,331.18

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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.