Home / 10,347.60-15,521.40-7,431.60

Finding the Fourth Proportional to 10,347.60, 15,521.40 and 7,431.60

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Solution

The fourth proportional to 10,347.60, 15,521.40 and 7,431.60 is: 11,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,347.60 : 15,521.40 = 7,431.60 : x
  2. Step 2: Convert to fraction form
    10,347.60/15,521.40 = 7,431.60/x
  3. Step 3: Cross multiply
    10,347.60x = 15,521.40 × 7,431.60
  4. Step 4: Simplify right side
    10,347.60x = 115,348,836.24
  5. Step 5: Solve for x
    x = 115,348,836.24/10,347.60
  6. Step 6: Final answer
    x = 11,147.40

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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.