Home / 28,101.20-42,118.32-13,088.12

Finding the Fourth Proportional to 28,101.20, 42,118.32 and 13,088.12

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Solution

The fourth proportional to 28,101.20, 42,118.32 and 13,088.12 is: 19,616.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.20 : 42,118.32 = 13,088.12 : x
  2. Step 2: Convert to fraction form
    28,101.20/42,118.32 = 13,088.12/x
  3. Step 3: Cross multiply
    28,101.20x = 42,118.32 × 13,088.12
  4. Step 4: Simplify right side
    28,101.20x = 551,249,626.36
  5. Step 5: Solve for x
    x = 551,249,626.36/28,101.20
  6. Step 6: Final answer
    x = 19,616.59

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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.