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Finding the Fourth Proportional to 15,205.80, 20,973.44 and 13,951.01

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Solution

The fourth proportional to 15,205.80, 20,973.44 and 13,951.01 is: 19,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,205.80 : 20,973.44 = 13,951.01 : x
  2. Step 2: Convert to fraction form
    15,205.80/20,973.44 = 13,951.01/x
  3. Step 3: Cross multiply
    15,205.80x = 20,973.44 × 13,951.01
  4. Step 4: Simplify right side
    15,205.80x = 292,600,719.12
  5. Step 5: Solve for x
    x = 292,600,719.12/15,205.80
  6. Step 6: Final answer
    x = 19,242.70

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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.