Home / 13,690.42-18,875.65-11,425.03

Finding the Fourth Proportional to 13,690.42, 18,875.65 and 11,425.03

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Solution

The fourth proportional to 13,690.42, 18,875.65 and 11,425.03 is: 15,752.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.42 : 18,875.65 = 11,425.03 : x
  2. Step 2: Convert to fraction form
    13,690.42/18,875.65 = 11,425.03/x
  3. Step 3: Cross multiply
    13,690.42x = 18,875.65 × 11,425.03
  4. Step 4: Simplify right side
    13,690.42x = 215,654,867.52
  5. Step 5: Solve for x
    x = 215,654,867.52/13,690.42
  6. Step 6: Final answer
    x = 15,752.25

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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.