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Finding the Fourth Proportional to 8,980.80, 13,492.80 and 8,030.40

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Solution

The fourth proportional to 8,980.80, 13,492.80 and 8,030.40 is: 12,064.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.80 : 13,492.80 = 8,030.40 : x
  2. Step 2: Convert to fraction form
    8,980.80/13,492.80 = 8,030.40/x
  3. Step 3: Cross multiply
    8,980.80x = 13,492.80 × 8,030.40
  4. Step 4: Simplify right side
    8,980.80x = 108,352,581.12
  5. Step 5: Solve for x
    x = 108,352,581.12/8,980.80
  6. Step 6: Final answer
    x = 12,064.91

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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.