Home / 54,012.72-81,018.96-18,962.40

Finding the Fourth Proportional to 54,012.72, 81,018.96 and 18,962.40

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Solution

The fourth proportional to 54,012.72, 81,018.96 and 18,962.40 is: 28,443.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,012.72 : 81,018.96 = 18,962.40 : x
  2. Step 2: Convert to fraction form
    54,012.72/81,018.96 = 18,962.40/x
  3. Step 3: Cross multiply
    54,012.72x = 81,018.96 × 18,962.40
  4. Step 4: Simplify right side
    54,012.72x = 1,536,313,927.10
  5. Step 5: Solve for x
    x = 1,536,313,927.10/54,012.72
  6. Step 6: Final answer
    x = 28,443.56

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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.