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Finding the Fourth Proportional to 14,695.04, 20,279.04 and 7,980.54

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Solution

The fourth proportional to 14,695.04, 20,279.04 and 7,980.54 is: 11,013.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,695.04 : 20,279.04 = 7,980.54 : x
  2. Step 2: Convert to fraction form
    14,695.04/20,279.04 = 7,980.54/x
  3. Step 3: Cross multiply
    14,695.04x = 20,279.04 × 7,980.54
  4. Step 4: Simplify right side
    14,695.04x = 161,837,689.88
  5. Step 5: Solve for x
    x = 161,837,689.88/14,695.04
  6. Step 6: Final answer
    x = 11,013.08

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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.