Home / 15,419.40-23,139.90-9,886.20

Finding the Fourth Proportional to 15,419.40, 23,139.90 and 9,886.20

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Solution

The fourth proportional to 15,419.40, 23,139.90 and 9,886.20 is: 14,836.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.40 : 23,139.90 = 9,886.20 : x
  2. Step 2: Convert to fraction form
    15,419.40/23,139.90 = 9,886.20/x
  3. Step 3: Cross multiply
    15,419.40x = 23,139.90 × 9,886.20
  4. Step 4: Simplify right side
    15,419.40x = 228,765,679.38
  5. Step 5: Solve for x
    x = 228,765,679.38/15,419.40
  6. Step 6: Final answer
    x = 14,836.22

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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.