Home / 21,473.48-29,686.68-21,276.56

Finding the Fourth Proportional to 21,473.48, 29,686.68 and 21,276.56

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Solution

The fourth proportional to 21,473.48, 29,686.68 and 21,276.56 is: 29,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,473.48 : 29,686.68 = 21,276.56 : x
  2. Step 2: Convert to fraction form
    21,473.48/29,686.68 = 21,276.56/x
  3. Step 3: Cross multiply
    21,473.48x = 29,686.68 × 21,276.56
  4. Step 4: Simplify right side
    21,473.48x = 631,630,428.22
  5. Step 5: Solve for x
    x = 631,630,428.22/21,473.48
  6. Step 6: Final answer
    x = 29,414.44

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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.