Home / 21,217.04-29,299.20-13,681.00

Finding the Fourth Proportional to 21,217.04, 29,299.20 and 13,681.00

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Solution

The fourth proportional to 21,217.04, 29,299.20 and 13,681.00 is: 18,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.04 : 29,299.20 = 13,681.00 : x
  2. Step 2: Convert to fraction form
    21,217.04/29,299.20 = 13,681.00/x
  3. Step 3: Cross multiply
    21,217.04x = 29,299.20 × 13,681.00
  4. Step 4: Simplify right side
    21,217.04x = 400,842,208.70
  5. Step 5: Solve for x
    x = 400,842,208.70/21,217.04
  6. Step 6: Final answer
    x = 18,892.47

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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.