Home / 28,356.46-39,134.17-16,420.01

Finding the Fourth Proportional to 28,356.46, 39,134.17 and 16,420.01

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Solution

The fourth proportional to 28,356.46, 39,134.17 and 16,420.01 is: 22,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.46 : 39,134.17 = 16,420.01 : x
  2. Step 2: Convert to fraction form
    28,356.46/39,134.17 = 16,420.01/x
  3. Step 3: Cross multiply
    28,356.46x = 39,134.17 × 16,420.01
  4. Step 4: Simplify right side
    28,356.46x = 642,583,287.60
  5. Step 5: Solve for x
    x = 642,583,287.60/28,356.46
  6. Step 6: Final answer
    x = 22,660.92

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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.