Home / 28,182.56-42,272.51-11,538.47

Finding the Fourth Proportional to 28,182.56, 42,272.51 and 11,538.47

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Solution

The fourth proportional to 28,182.56, 42,272.51 and 11,538.47 is: 17,307.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.56 : 42,272.51 = 11,538.47 : x
  2. Step 2: Convert to fraction form
    28,182.56/42,272.51 = 11,538.47/x
  3. Step 3: Cross multiply
    28,182.56x = 42,272.51 × 11,538.47
  4. Step 4: Simplify right side
    28,182.56x = 487,759,819.40
  5. Step 5: Solve for x
    x = 487,759,819.40/28,182.56
  6. Step 6: Final answer
    x = 17,307.15

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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.