Home / 28,280.84-39,036.71-20,346.13

Finding the Fourth Proportional to 28,280.84, 39,036.71 and 20,346.13

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Solution

The fourth proportional to 28,280.84, 39,036.71 and 20,346.13 is: 28,084.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.84 : 39,036.71 = 20,346.13 : x
  2. Step 2: Convert to fraction form
    28,280.84/39,036.71 = 20,346.13/x
  3. Step 3: Cross multiply
    28,280.84x = 39,036.71 × 20,346.13
  4. Step 4: Simplify right side
    28,280.84x = 794,245,679.52
  5. Step 5: Solve for x
    x = 794,245,679.52/28,280.84
  6. Step 6: Final answer
    x = 28,084.23

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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.