Home / 28,112.90-42,155.01-9,386.21

Finding the Fourth Proportional to 28,112.90, 42,155.01 and 9,386.21

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Solution

The fourth proportional to 28,112.90, 42,155.01 and 9,386.21 is: 14,074.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.90 : 42,155.01 = 9,386.21 : x
  2. Step 2: Convert to fraction form
    28,112.90/42,155.01 = 9,386.21/x
  3. Step 3: Cross multiply
    28,112.90x = 42,155.01 × 9,386.21
  4. Step 4: Simplify right side
    28,112.90x = 395,675,565.64
  5. Step 5: Solve for x
    x = 395,675,565.64/28,112.90
  6. Step 6: Final answer
    x = 14,074.52

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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.