Home / 15,356.22-21,191.51-8,641.96

Finding the Fourth Proportional to 15,356.22, 21,191.51 and 8,641.96

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Solution

The fourth proportional to 15,356.22, 21,191.51 and 8,641.96 is: 11,925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.22 : 21,191.51 = 8,641.96 : x
  2. Step 2: Convert to fraction form
    15,356.22/21,191.51 = 8,641.96/x
  3. Step 3: Cross multiply
    15,356.22x = 21,191.51 × 8,641.96
  4. Step 4: Simplify right side
    15,356.22x = 183,136,032.59
  5. Step 5: Solve for x
    x = 183,136,032.59/15,356.22
  6. Step 6: Final answer
    x = 11,925.86

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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.