Home / 15,657.12-21,607.56-8,943.48

Finding the Fourth Proportional to 15,657.12, 21,607.56 and 8,943.48

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Solution

The fourth proportional to 15,657.12, 21,607.56 and 8,943.48 is: 12,342.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.12 : 21,607.56 = 8,943.48 : x
  2. Step 2: Convert to fraction form
    15,657.12/21,607.56 = 8,943.48/x
  3. Step 3: Cross multiply
    15,657.12x = 21,607.56 × 8,943.48
  4. Step 4: Simplify right side
    15,657.12x = 193,246,780.71
  5. Step 5: Solve for x
    x = 193,246,780.71/15,657.12
  6. Step 6: Final answer
    x = 12,342.42

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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.