Home / 28,283.84-39,040.85-20,349.13

Finding the Fourth Proportional to 28,283.84, 39,040.85 and 20,349.13

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Solution

The fourth proportional to 28,283.84, 39,040.85 and 20,349.13 is: 28,088.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.84 : 39,040.85 = 20,349.13 : x
  2. Step 2: Convert to fraction form
    28,283.84/39,040.85 = 20,349.13/x
  3. Step 3: Cross multiply
    28,283.84x = 39,040.85 × 20,349.13
  4. Step 4: Simplify right side
    28,283.84x = 794,447,331.96
  5. Step 5: Solve for x
    x = 794,447,331.96/28,283.84
  6. Step 6: Final answer
    x = 28,088.38

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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.