Home / 28,720.77-43,081.22-9,001.05

Finding the Fourth Proportional to 28,720.77, 43,081.22 and 9,001.05

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Solution

The fourth proportional to 28,720.77, 43,081.22 and 9,001.05 is: 13,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.77 : 43,081.22 = 9,001.05 : x
  2. Step 2: Convert to fraction form
    28,720.77/43,081.22 = 9,001.05/x
  3. Step 3: Cross multiply
    28,720.77x = 43,081.22 × 9,001.05
  4. Step 4: Simplify right side
    28,720.77x = 387,776,215.28
  5. Step 5: Solve for x
    x = 387,776,215.28/28,720.77
  6. Step 6: Final answer
    x = 13,501.60

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.