Home / 21,585.40-32,365.81-10,489.12

Finding the Fourth Proportional to 21,585.40, 32,365.81 and 10,489.12

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Solution

The fourth proportional to 21,585.40, 32,365.81 and 10,489.12 is: 15,727.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.40 : 32,365.81 = 10,489.12 : x
  2. Step 2: Convert to fraction form
    21,585.40/32,365.81 = 10,489.12/x
  3. Step 3: Cross multiply
    21,585.40x = 32,365.81 × 10,489.12
  4. Step 4: Simplify right side
    21,585.40x = 339,488,864.99
  5. Step 5: Solve for x
    x = 339,488,864.99/21,585.40
  6. Step 6: Final answer
    x = 15,727.71

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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.