Home / 39,431.80-54,415.02-21,526.12

Finding the Fourth Proportional to 39,431.80, 54,415.02 and 21,526.12

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Solution

The fourth proportional to 39,431.80, 54,415.02 and 21,526.12 is: 29,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.80 : 54,415.02 = 21,526.12 : x
  2. Step 2: Convert to fraction form
    39,431.80/54,415.02 = 21,526.12/x
  3. Step 3: Cross multiply
    39,431.80x = 54,415.02 × 21,526.12
  4. Step 4: Simplify right side
    39,431.80x = 1,171,344,250.32
  5. Step 5: Solve for x
    x = 1,171,344,250.32/39,431.80
  6. Step 6: Final answer
    x = 29,705.57

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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.