Home / 15,409.13-21,264.60-8,335.55

Finding the Fourth Proportional to 15,409.13, 21,264.60 and 8,335.55

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Solution

The fourth proportional to 15,409.13, 21,264.60 and 8,335.55 is: 11,503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.13 : 21,264.60 = 8,335.55 : x
  2. Step 2: Convert to fraction form
    15,409.13/21,264.60 = 8,335.55/x
  3. Step 3: Cross multiply
    15,409.13x = 21,264.60 × 8,335.55
  4. Step 4: Simplify right side
    15,409.13x = 177,252,136.53
  5. Step 5: Solve for x
    x = 177,252,136.53/15,409.13
  6. Step 6: Final answer
    x = 11,503.06

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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.