Home / 28,602.97-39,428.34-20,081.18

Finding the Fourth Proportional to 28,602.97, 39,428.34 and 20,081.18

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Solution

The fourth proportional to 28,602.97, 39,428.34 and 20,081.18 is: 27,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.97 : 39,428.34 = 20,081.18 : x
  2. Step 2: Convert to fraction form
    28,602.97/39,428.34 = 20,081.18/x
  3. Step 3: Cross multiply
    28,602.97x = 39,428.34 × 20,081.18
  4. Step 4: Simplify right side
    28,602.97x = 791,767,592.64
  5. Step 5: Solve for x
    x = 791,767,592.64/28,602.97
  6. Step 6: Final answer
    x = 27,681.31

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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.