Home / 39,315.31-54,253.40-21,409.25

Finding the Fourth Proportional to 39,315.31, 54,253.40 and 21,409.25

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Solution

The fourth proportional to 39,315.31, 54,253.40 and 21,409.25 is: 29,543.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.31 : 54,253.40 = 21,409.25 : x
  2. Step 2: Convert to fraction form
    39,315.31/54,253.40 = 21,409.25/x
  3. Step 3: Cross multiply
    39,315.31x = 54,253.40 × 21,409.25
  4. Step 4: Simplify right side
    39,315.31x = 1,161,524,225.64
  5. Step 5: Solve for x
    x = 1,161,524,225.64/39,315.31
  6. Step 6: Final answer
    x = 29,543.82

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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.