Home / 21,619.12-32,381.68-10,502.40

Finding the Fourth Proportional to 21,619.12, 32,381.68 and 10,502.40

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Solution

The fourth proportional to 21,619.12, 32,381.68 and 10,502.40 is: 15,730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.12 : 32,381.68 = 10,502.40 : x
  2. Step 2: Convert to fraction form
    21,619.12/32,381.68 = 10,502.40/x
  3. Step 3: Cross multiply
    21,619.12x = 32,381.68 × 10,502.40
  4. Step 4: Simplify right side
    21,619.12x = 340,085,356.03
  5. Step 5: Solve for x
    x = 340,085,356.03/21,619.12
  6. Step 6: Final answer
    x = 15,730.77

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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.