Home / 15,043.28-20,739.31-12,681.32

Finding the Fourth Proportional to 15,043.28, 20,739.31 and 12,681.32

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Solution

The fourth proportional to 15,043.28, 20,739.31 and 12,681.32 is: 17,483.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.28 : 20,739.31 = 12,681.32 : x
  2. Step 2: Convert to fraction form
    15,043.28/20,739.31 = 12,681.32/x
  3. Step 3: Cross multiply
    15,043.28x = 20,739.31 × 12,681.32
  4. Step 4: Simplify right side
    15,043.28x = 263,001,691.29
  5. Step 5: Solve for x
    x = 263,001,691.29/15,043.28
  6. Step 6: Final answer
    x = 17,483.01

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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.