Home / 54,417.14-81,610.21-21,130.09

Finding the Fourth Proportional to 54,417.14, 81,610.21 and 21,130.09

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Solution

The fourth proportional to 54,417.14, 81,610.21 and 21,130.09 is: 31,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,417.14 : 81,610.21 = 21,130.09 : x
  2. Step 2: Convert to fraction form
    54,417.14/81,610.21 = 21,130.09/x
  3. Step 3: Cross multiply
    54,417.14x = 81,610.21 × 21,130.09
  4. Step 4: Simplify right side
    54,417.14x = 1,724,430,904.61
  5. Step 5: Solve for x
    x = 1,724,430,904.61/54,417.14
  6. Step 6: Final answer
    x = 31,689.11

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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.