Home / 35,130.39-48,470.18-20,978.07

Finding the Fourth Proportional to 35,130.39, 48,470.18 and 20,978.07

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Solution

The fourth proportional to 35,130.39, 48,470.18 and 20,978.07 is: 28,943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,130.39 : 48,470.18 = 20,978.07 : x
  2. Step 2: Convert to fraction form
    35,130.39/48,470.18 = 20,978.07/x
  3. Step 3: Cross multiply
    35,130.39x = 48,470.18 × 20,978.07
  4. Step 4: Simplify right side
    35,130.39x = 1,016,810,724.06
  5. Step 5: Solve for x
    x = 1,016,810,724.06/35,130.39
  6. Step 6: Final answer
    x = 28,943.91

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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.