Home / 32,719.07-45,138.87-20,778.05

Finding the Fourth Proportional to 32,719.07, 45,138.87 and 20,778.05

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Solution

The fourth proportional to 32,719.07, 45,138.87 and 20,778.05 is: 28,665.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,719.07 : 45,138.87 = 20,778.05 : x
  2. Step 2: Convert to fraction form
    32,719.07/45,138.87 = 20,778.05/x
  3. Step 3: Cross multiply
    32,719.07x = 45,138.87 × 20,778.05
  4. Step 4: Simplify right side
    32,719.07x = 937,897,810.65
  5. Step 5: Solve for x
    x = 937,897,810.65/32,719.07
  6. Step 6: Final answer
    x = 28,665.17

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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.