Home / 21,581.16-32,384.28-9,100.40

Finding the Fourth Proportional to 21,581.16, 32,384.28 and 9,100.40

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Solution

The fourth proportional to 21,581.16, 32,384.28 and 9,100.40 is: 13,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.16 : 32,384.28 = 9,100.40 : x
  2. Step 2: Convert to fraction form
    21,581.16/32,384.28 = 9,100.40/x
  3. Step 3: Cross multiply
    21,581.16x = 32,384.28 × 9,100.40
  4. Step 4: Simplify right side
    21,581.16x = 294,709,901.71
  5. Step 5: Solve for x
    x = 294,709,901.71/21,581.16
  6. Step 6: Final answer
    x = 13,655.89

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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.