Home / 21,356.78-32,000.56-13,011.48

Finding the Fourth Proportional to 21,356.78, 32,000.56 and 13,011.48

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Solution

The fourth proportional to 21,356.78, 32,000.56 and 13,011.48 is: 19,496.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.78 : 32,000.56 = 13,011.48 : x
  2. Step 2: Convert to fraction form
    21,356.78/32,000.56 = 13,011.48/x
  3. Step 3: Cross multiply
    21,356.78x = 32,000.56 × 13,011.48
  4. Step 4: Simplify right side
    21,356.78x = 416,374,613.90
  5. Step 5: Solve for x
    x = 416,374,613.90/21,356.78
  6. Step 6: Final answer
    x = 19,496.14

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1.5x scale

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.