Home / 12,719.52-19,079.28-7,236

Finding the Fourth Proportional to 12,719.52, 19,079.28 and 7,236

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Solution

The fourth proportional to 12,719.52, 19,079.28 and 7,236 is: 10,854.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.52 : 19,079.28 = 7,236 : x
  2. Step 2: Convert to fraction form
    12,719.52/19,079.28 = 7,236/x
  3. Step 3: Cross multiply
    12,719.52x = 19,079.28 × 7,236
  4. Step 4: Simplify right side
    12,719.52x = 138,057,670.08
  5. Step 5: Solve for x
    x = 138,057,670.08/12,719.52
  6. Step 6: Final answer
    x = 10,854.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.