Home / 26,419.50-36,459.18-15,811.20

Finding the Fourth Proportional to 26,419.50, 36,459.18 and 15,811.20

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Solution

The fourth proportional to 26,419.50, 36,459.18 and 15,811.20 is: 21,819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,419.50 : 36,459.18 = 15,811.20 : x
  2. Step 2: Convert to fraction form
    26,419.50/36,459.18 = 15,811.20/x
  3. Step 3: Cross multiply
    26,419.50x = 36,459.18 × 15,811.20
  4. Step 4: Simplify right side
    26,419.50x = 576,463,386.82
  5. Step 5: Solve for x
    x = 576,463,386.82/26,419.50
  6. Step 6: Final answer
    x = 21,819.62

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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.