Home / 15,776.06-21,770.61-8,702.47

Finding the Fourth Proportional to 15,776.06, 21,770.61 and 8,702.47

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Solution

The fourth proportional to 15,776.06, 21,770.61 and 8,702.47 is: 12,009.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.06 : 21,770.61 = 8,702.47 : x
  2. Step 2: Convert to fraction form
    15,776.06/21,770.61 = 8,702.47/x
  3. Step 3: Cross multiply
    15,776.06x = 21,770.61 × 8,702.47
  4. Step 4: Simplify right side
    15,776.06x = 189,458,074.99
  5. Step 5: Solve for x
    x = 189,458,074.99/15,776.06
  6. Step 6: Final answer
    x = 12,009.22

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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.