Home / 29,127.51-40,311.45-28,428.75

Finding the Fourth Proportional to 29,127.51, 40,311.45 and 28,428.75

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Solution

The fourth proportional to 29,127.51, 40,311.45 and 28,428.75 is: 39,344.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,127.51 : 40,311.45 = 28,428.75 : x
  2. Step 2: Convert to fraction form
    29,127.51/40,311.45 = 28,428.75/x
  3. Step 3: Cross multiply
    29,127.51x = 40,311.45 × 28,428.75
  4. Step 4: Simplify right side
    29,127.51x = 1,146,004,134.19
  5. Step 5: Solve for x
    x = 1,146,004,134.19/29,127.51
  6. Step 6: Final answer
    x = 39,344.39

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Half scale
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Double scale
Find fourth proportional to 29,128.51, 40,312.83 and 28,429.75
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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.