Home / 19,217.20-28,825.80-13,312.30

Finding the Fourth Proportional to 19,217.20, 28,825.80 and 13,312.30

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Solution

The fourth proportional to 19,217.20, 28,825.80 and 13,312.30 is: 19,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,217.20 : 28,825.80 = 13,312.30 : x
  2. Step 2: Convert to fraction form
    19,217.20/28,825.80 = 13,312.30/x
  3. Step 3: Cross multiply
    19,217.20x = 28,825.80 × 13,312.30
  4. Step 4: Simplify right side
    19,217.20x = 383,737,697.34
  5. Step 5: Solve for x
    x = 383,737,697.34/19,217.20
  6. Step 6: Final answer
    x = 19,968.45

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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.