Home / 15,436.66-21,302.30-8,630.66

Finding the Fourth Proportional to 15,436.66, 21,302.30 and 8,630.66

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Solution

The fourth proportional to 15,436.66, 21,302.30 and 8,630.66 is: 11,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.66 : 21,302.30 = 8,630.66 : x
  2. Step 2: Convert to fraction form
    15,436.66/21,302.30 = 8,630.66/x
  3. Step 3: Cross multiply
    15,436.66x = 21,302.30 × 8,630.66
  4. Step 4: Simplify right side
    15,436.66x = 183,852,908.52
  5. Step 5: Solve for x
    x = 183,852,908.52/15,436.66
  6. Step 6: Final answer
    x = 11,910.15

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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.