Home / 28,118.65-38,802.55-16,182.40

Finding the Fourth Proportional to 28,118.65, 38,802.55 and 16,182.40

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Solution

The fourth proportional to 28,118.65, 38,802.55 and 16,182.40 is: 22,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.65 : 38,802.55 = 16,182.40 : x
  2. Step 2: Convert to fraction form
    28,118.65/38,802.55 = 16,182.40/x
  3. Step 3: Cross multiply
    28,118.65x = 38,802.55 × 16,182.40
  4. Step 4: Simplify right side
    28,118.65x = 627,918,385.12
  5. Step 5: Solve for x
    x = 627,918,385.12/28,118.65
  6. Step 6: Final answer
    x = 22,331.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.