Home / 18,876.90-28,319.40-5,730.60

Finding the Fourth Proportional to 18,876.90, 28,319.40 and 5,730.60

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Solution

The fourth proportional to 18,876.90, 28,319.40 and 5,730.60 is: 8,597.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.90 : 28,319.40 = 5,730.60 : x
  2. Step 2: Convert to fraction form
    18,876.90/28,319.40 = 5,730.60/x
  3. Step 3: Cross multiply
    18,876.90x = 28,319.40 × 5,730.60
  4. Step 4: Simplify right side
    18,876.90x = 162,287,153.64
  5. Step 5: Solve for x
    x = 162,287,153.64/18,876.90
  6. Step 6: Final answer
    x = 8,597.13

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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.