Home / 29,310.55-40,448.75-15,881.91

Finding the Fourth Proportional to 29,310.55, 40,448.75 and 15,881.91

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Solution

The fourth proportional to 29,310.55, 40,448.75 and 15,881.91 is: 21,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,310.55 : 40,448.75 = 15,881.91 : x
  2. Step 2: Convert to fraction form
    29,310.55/40,448.75 = 15,881.91/x
  3. Step 3: Cross multiply
    29,310.55x = 40,448.75 × 15,881.91
  4. Step 4: Simplify right side
    29,310.55x = 642,403,407.11
  5. Step 5: Solve for x
    x = 642,403,407.11/29,310.55
  6. Step 6: Final answer
    x = 21,917.14

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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.