Home / 28,099.58-42,170.10-13,308.47

Finding the Fourth Proportional to 28,099.58, 42,170.10 and 13,308.47

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Solution

The fourth proportional to 28,099.58, 42,170.10 and 13,308.47 is: 19,972.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.58 : 42,170.10 = 13,308.47 : x
  2. Step 2: Convert to fraction form
    28,099.58/42,170.10 = 13,308.47/x
  3. Step 3: Cross multiply
    28,099.58x = 42,170.10 × 13,308.47
  4. Step 4: Simplify right side
    28,099.58x = 561,219,510.75
  5. Step 5: Solve for x
    x = 561,219,510.75/28,099.58
  6. Step 6: Final answer
    x = 19,972.52

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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.