Home / 18,320.40-27,502.20-10,429.20

Finding the Fourth Proportional to 18,320.40, 27,502.20 and 10,429.20

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Solution

The fourth proportional to 18,320.40, 27,502.20 and 10,429.20 is: 15,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.40 : 27,502.20 = 10,429.20 : x
  2. Step 2: Convert to fraction form
    18,320.40/27,502.20 = 10,429.20/x
  3. Step 3: Cross multiply
    18,320.40x = 27,502.20 × 10,429.20
  4. Step 4: Simplify right side
    18,320.40x = 286,825,944.24
  5. Step 5: Solve for x
    x = 286,825,944.24/18,320.40
  6. Step 6: Final answer
    x = 15,656.10

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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.