Home / 28,798.49-39,755.25-20,307.53

Finding the Fourth Proportional to 28,798.49, 39,755.25 and 20,307.53

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Solution

The fourth proportional to 28,798.49, 39,755.25 and 20,307.53 is: 28,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.49 : 39,755.25 = 20,307.53 : x
  2. Step 2: Convert to fraction form
    28,798.49/39,755.25 = 20,307.53/x
  3. Step 3: Cross multiply
    28,798.49x = 39,755.25 × 20,307.53
  4. Step 4: Simplify right side
    28,798.49x = 807,330,733.26
  5. Step 5: Solve for x
    x = 807,330,733.26/28,798.49
  6. Step 6: Final answer
    x = 28,033.79

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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.