Home / 10,975.18-15,145.85-6,440.58

Finding the Fourth Proportional to 10,975.18, 15,145.85 and 6,440.58

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Solution

The fourth proportional to 10,975.18, 15,145.85 and 6,440.58 is: 8,888.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,975.18 : 15,145.85 = 6,440.58 : x
  2. Step 2: Convert to fraction form
    10,975.18/15,145.85 = 6,440.58/x
  3. Step 3: Cross multiply
    10,975.18x = 15,145.85 × 6,440.58
  4. Step 4: Simplify right side
    10,975.18x = 97,548,031.61
  5. Step 5: Solve for x
    x = 97,548,031.61/10,975.18
  6. Step 6: Final answer
    x = 8,888.05

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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.