Home / 19,308.04-28,959.90-8,917

Finding the Fourth Proportional to 19,308.04, 28,959.90 and 8,917

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Solution

The fourth proportional to 19,308.04, 28,959.90 and 8,917 is: 13,374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,308.04 : 28,959.90 = 8,917 : x
  2. Step 2: Convert to fraction form
    19,308.04/28,959.90 = 8,917/x
  3. Step 3: Cross multiply
    19,308.04x = 28,959.90 × 8,917
  4. Step 4: Simplify right side
    19,308.04x = 258,235,428.30
  5. Step 5: Solve for x
    x = 258,235,428.30/19,308.04
  6. Step 6: Final answer
    x = 13,374.50

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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.