Home / 54,219.18-81,313.13-18,679.06

Finding the Fourth Proportional to 54,219.18, 81,313.13 and 18,679.06

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Solution

The fourth proportional to 54,219.18, 81,313.13 and 18,679.06 is: 28,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,219.18 : 81,313.13 = 18,679.06 : x
  2. Step 2: Convert to fraction form
    54,219.18/81,313.13 = 18,679.06/x
  3. Step 3: Cross multiply
    54,219.18x = 81,313.13 × 18,679.06
  4. Step 4: Simplify right side
    54,219.18x = 1,518,852,834.06
  5. Step 5: Solve for x
    x = 1,518,852,834.06/54,219.18
  6. Step 6: Final answer
    x = 28,013.20

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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.