Home / 28,338.80-42,489.97-13,547.39

Finding the Fourth Proportional to 28,338.80, 42,489.97 and 13,547.39

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Solution

The fourth proportional to 28,338.80, 42,489.97 and 13,547.39 is: 20,312.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.80 : 42,489.97 = 13,547.39 : x
  2. Step 2: Convert to fraction form
    28,338.80/42,489.97 = 13,547.39/x
  3. Step 3: Cross multiply
    28,338.80x = 42,489.97 × 13,547.39
  4. Step 4: Simplify right side
    28,338.80x = 575,627,948.36
  5. Step 5: Solve for x
    x = 575,627,948.36/28,338.80
  6. Step 6: Final answer
    x = 20,312.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.