Home / 21,659.48-29,894.82-13,712.30

Finding the Fourth Proportional to 21,659.48, 29,894.82 and 13,712.30

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Solution

The fourth proportional to 21,659.48, 29,894.82 and 13,712.30 is: 18,925.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.48 : 29,894.82 = 13,712.30 : x
  2. Step 2: Convert to fraction form
    21,659.48/29,894.82 = 13,712.30/x
  3. Step 3: Cross multiply
    21,659.48x = 29,894.82 × 13,712.30
  4. Step 4: Simplify right side
    21,659.48x = 409,926,740.29
  5. Step 5: Solve for x
    x = 409,926,740.29/21,659.48
  6. Step 6: Final answer
    x = 18,925.97

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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.