Home / 15,356.20-21,191.50-8,641.84

Finding the Fourth Proportional to 15,356.20, 21,191.50 and 8,641.84

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Solution

The fourth proportional to 15,356.20, 21,191.50 and 8,641.84 is: 11,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.20 : 21,191.50 = 8,641.84 : x
  2. Step 2: Convert to fraction form
    15,356.20/21,191.50 = 8,641.84/x
  3. Step 3: Cross multiply
    15,356.20x = 21,191.50 × 8,641.84
  4. Step 4: Simplify right side
    15,356.20x = 183,133,552.36
  5. Step 5: Solve for x
    x = 183,133,552.36/15,356.20
  6. Step 6: Final answer
    x = 11,925.71

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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.