Home / 21,581.12-32,374-6,790.48

Finding the Fourth Proportional to 21,581.12, 32,374 and 6,790.48

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Solution

The fourth proportional to 21,581.12, 32,374 and 6,790.48 is: 10,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.12 : 32,374 = 6,790.48 : x
  2. Step 2: Convert to fraction form
    21,581.12/32,374 = 6,790.48/x
  3. Step 3: Cross multiply
    21,581.12x = 32,374 × 6,790.48
  4. Step 4: Simplify right side
    21,581.12x = 219,834,999.52
  5. Step 5: Solve for x
    x = 219,834,999.52/21,581.12
  6. Step 6: Final answer
    x = 10,186.45

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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.