Home / 28,159.60-42,208.88-18,305.96

Finding the Fourth Proportional to 28,159.60, 42,208.88 and 18,305.96

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Solution

The fourth proportional to 28,159.60, 42,208.88 and 18,305.96 is: 27,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.60 : 42,208.88 = 18,305.96 : x
  2. Step 2: Convert to fraction form
    28,159.60/42,208.88 = 18,305.96/x
  3. Step 3: Cross multiply
    28,159.60x = 42,208.88 × 18,305.96
  4. Step 4: Simplify right side
    28,159.60x = 772,674,068.92
  5. Step 5: Solve for x
    x = 772,674,068.92/28,159.60
  6. Step 6: Final answer
    x = 27,439.10

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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.