Home / 15,129.36-22,742.64-14,047.20

Finding the Fourth Proportional to 15,129.36, 22,742.64 and 14,047.20

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Solution

The fourth proportional to 15,129.36, 22,742.64 and 14,047.20 is: 21,115.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.36 : 22,742.64 = 14,047.20 : x
  2. Step 2: Convert to fraction form
    15,129.36/22,742.64 = 14,047.20/x
  3. Step 3: Cross multiply
    15,129.36x = 22,742.64 × 14,047.20
  4. Step 4: Simplify right side
    15,129.36x = 319,470,412.61
  5. Step 5: Solve for x
    x = 319,470,412.61/15,129.36
  6. Step 6: Final answer
    x = 21,115.92

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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.