Home / 15,702.33-21,670.42-8,990.06

Finding the Fourth Proportional to 15,702.33, 21,670.42 and 8,990.06

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Solution

The fourth proportional to 15,702.33, 21,670.42 and 8,990.06 is: 12,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.33 : 21,670.42 = 8,990.06 : x
  2. Step 2: Convert to fraction form
    15,702.33/21,670.42 = 8,990.06/x
  3. Step 3: Cross multiply
    15,702.33x = 21,670.42 × 8,990.06
  4. Step 4: Simplify right side
    15,702.33x = 194,818,376.03
  5. Step 5: Solve for x
    x = 194,818,376.03/15,702.33
  6. Step 6: Final answer
    x = 12,406.97

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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.