Home / 21,254.04-29,338.80-15,964.20

Finding the Fourth Proportional to 21,254.04, 29,338.80 and 15,964.20

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Solution

The fourth proportional to 21,254.04, 29,338.80 and 15,964.20 is: 22,036.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.04 : 29,338.80 = 15,964.20 : x
  2. Step 2: Convert to fraction form
    21,254.04/29,338.80 = 15,964.20/x
  3. Step 3: Cross multiply
    21,254.04x = 29,338.80 × 15,964.20
  4. Step 4: Simplify right side
    21,254.04x = 468,370,470.96
  5. Step 5: Solve for x
    x = 468,370,470.96/21,254.04
  6. Step 6: Final answer
    x = 22,036.77

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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.