Home / 15,359.85-21,191.31-9,312.04

Finding the Fourth Proportional to 15,359.85, 21,191.31 and 9,312.04

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Solution

The fourth proportional to 15,359.85, 21,191.31 and 9,312.04 is: 12,847.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.85 : 21,191.31 = 9,312.04 : x
  2. Step 2: Convert to fraction form
    15,359.85/21,191.31 = 9,312.04/x
  3. Step 3: Cross multiply
    15,359.85x = 21,191.31 × 9,312.04
  4. Step 4: Simplify right side
    15,359.85x = 197,334,352.86
  5. Step 5: Solve for x
    x = 197,334,352.86/15,359.85
  6. Step 6: Final answer
    x = 12,847.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.