Home / 20,980.10-28,952.52-11,548.66

Finding the Fourth Proportional to 20,980.10, 28,952.52 and 11,548.66

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Solution

The fourth proportional to 20,980.10, 28,952.52 and 11,548.66 is: 15,937.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.10 : 28,952.52 = 11,548.66 : x
  2. Step 2: Convert to fraction form
    20,980.10/28,952.52 = 11,548.66/x
  3. Step 3: Cross multiply
    20,980.10x = 28,952.52 × 11,548.66
  4. Step 4: Simplify right side
    20,980.10x = 334,362,809.62
  5. Step 5: Solve for x
    x = 334,362,809.62/20,980.10
  6. Step 6: Final answer
    x = 15,937.14

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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.