Home / 10,973.20-15,145.18-8,315.96

Finding the Fourth Proportional to 10,973.20, 15,145.18 and 8,315.96

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Solution

The fourth proportional to 10,973.20, 15,145.18 and 8,315.96 is: 11,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,973.20 : 15,145.18 = 8,315.96 : x
  2. Step 2: Convert to fraction form
    10,973.20/15,145.18 = 8,315.96/x
  3. Step 3: Cross multiply
    10,973.20x = 15,145.18 × 8,315.96
  4. Step 4: Simplify right side
    10,973.20x = 125,946,711.07
  5. Step 5: Solve for x
    x = 125,946,711.07/10,973.20
  6. Step 6: Final answer
    x = 11,477.66

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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.