Home / 18,988.30-28,485.15-5,841.74

Finding the Fourth Proportional to 18,988.30, 28,485.15 and 5,841.74

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Solution

The fourth proportional to 18,988.30, 28,485.15 and 5,841.74 is: 8,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.30 : 28,485.15 = 5,841.74 : x
  2. Step 2: Convert to fraction form
    18,988.30/28,485.15 = 5,841.74/x
  3. Step 3: Cross multiply
    18,988.30x = 28,485.15 × 5,841.74
  4. Step 4: Simplify right side
    18,988.30x = 166,402,840.16
  5. Step 5: Solve for x
    x = 166,402,840.16/18,988.30
  6. Step 6: Final answer
    x = 8,763.44

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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.