Home / 15,436.98-21,302.46-8,722.35

Finding the Fourth Proportional to 15,436.98, 21,302.46 and 8,722.35

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Solution

The fourth proportional to 15,436.98, 21,302.46 and 8,722.35 is: 12,036.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.98 : 21,302.46 = 8,722.35 : x
  2. Step 2: Convert to fraction form
    15,436.98/21,302.46 = 8,722.35/x
  3. Step 3: Cross multiply
    15,436.98x = 21,302.46 × 8,722.35
  4. Step 4: Simplify right side
    15,436.98x = 185,807,511.98
  5. Step 5: Solve for x
    x = 185,807,511.98/15,436.98
  6. Step 6: Final answer
    x = 12,036.52

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Double scale
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Similar ratio
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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.