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Finding the Fourth Proportional to 29,191, 40,284.54 and 15,943

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Solution

The fourth proportional to 29,191, 40,284.54 and 15,943 is: 22,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,191 : 40,284.54 = 15,943 : x
  2. Step 2: Convert to fraction form
    29,191/40,284.54 = 15,943/x
  3. Step 3: Cross multiply
    29,191x = 40,284.54 × 15,943
  4. Step 4: Simplify right side
    29,191x = 642,256,421.22
  5. Step 5: Solve for x
    x = 642,256,421.22/29,191
  6. Step 6: Final answer
    x = 22,001.86

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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.