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Finding the Fourth Proportional to 15,824.99, 21,838.62 and 8,751.53

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Solution

The fourth proportional to 15,824.99, 21,838.62 and 8,751.53 is: 12,077.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,824.99 : 21,838.62 = 8,751.53 : x
  2. Step 2: Convert to fraction form
    15,824.99/21,838.62 = 8,751.53/x
  3. Step 3: Cross multiply
    15,824.99x = 21,838.62 × 8,751.53
  4. Step 4: Simplify right side
    15,824.99x = 191,121,228.90
  5. Step 5: Solve for x
    x = 191,121,228.90/15,824.99
  6. Step 6: Final answer
    x = 12,077.18

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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.