Home / 54,218.46-81,312.09-18,678.35

Finding the Fourth Proportional to 54,218.46, 81,312.09 and 18,678.35

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Solution

The fourth proportional to 54,218.46, 81,312.09 and 18,678.35 is: 28,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,218.46 : 81,312.09 = 18,678.35 : x
  2. Step 2: Convert to fraction form
    54,218.46/81,312.09 = 18,678.35/x
  3. Step 3: Cross multiply
    54,218.46x = 81,312.09 × 18,678.35
  4. Step 4: Simplify right side
    54,218.46x = 1,518,775,430.91
  5. Step 5: Solve for x
    x = 1,518,775,430.91/54,218.46
  6. Step 6: Final answer
    x = 28,012.14

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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.