Home / 13,047.04-19,572-4,279.60

Finding the Fourth Proportional to 13,047.04, 19,572 and 4,279.60

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Solution

The fourth proportional to 13,047.04, 19,572 and 4,279.60 is: 6,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,047.04 : 19,572 = 4,279.60 : x
  2. Step 2: Convert to fraction form
    13,047.04/19,572 = 4,279.60/x
  3. Step 3: Cross multiply
    13,047.04x = 19,572 × 4,279.60
  4. Step 4: Simplify right side
    13,047.04x = 83,760,331.20
  5. Step 5: Solve for x
    x = 83,760,331.20/13,047.04
  6. Step 6: Final answer
    x = 6,419.87

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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.