Home / 21,061.89-29,062.85-12,564.45

Finding the Fourth Proportional to 21,061.89, 29,062.85 and 12,564.45

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Solution

The fourth proportional to 21,061.89, 29,062.85 and 12,564.45 is: 17,337.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061.89 : 29,062.85 = 12,564.45 : x
  2. Step 2: Convert to fraction form
    21,061.89/29,062.85 = 12,564.45/x
  3. Step 3: Cross multiply
    21,061.89x = 29,062.85 × 12,564.45
  4. Step 4: Simplify right side
    21,061.89x = 365,158,662.86
  5. Step 5: Solve for x
    x = 365,158,662.86/21,061.89
  6. Step 6: Final answer
    x = 17,337.41

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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.