Home / 21,142.04-29,176.36-11,581.76

Finding the Fourth Proportional to 21,142.04, 29,176.36 and 11,581.76

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Solution

The fourth proportional to 21,142.04, 29,176.36 and 11,581.76 is: 15,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.04 : 29,176.36 = 11,581.76 : x
  2. Step 2: Convert to fraction form
    21,142.04/29,176.36 = 11,581.76/x
  3. Step 3: Cross multiply
    21,142.04x = 29,176.36 × 11,581.76
  4. Step 4: Simplify right side
    21,142.04x = 337,913,599.19
  5. Step 5: Solve for x
    x = 337,913,599.19/21,142.04
  6. Step 6: Final answer
    x = 15,983.02

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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.