Home / 10,319.80-15,479.28-4,771.32

Finding the Fourth Proportional to 10,319.80, 15,479.28 and 4,771.32

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Solution

The fourth proportional to 10,319.80, 15,479.28 and 4,771.32 is: 7,156.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,319.80 : 15,479.28 = 4,771.32 : x
  2. Step 2: Convert to fraction form
    10,319.80/15,479.28 = 4,771.32/x
  3. Step 3: Cross multiply
    10,319.80x = 15,479.28 × 4,771.32
  4. Step 4: Simplify right side
    10,319.80x = 73,856,598.25
  5. Step 5: Solve for x
    x = 73,856,598.25/10,319.80
  6. Step 6: Final answer
    x = 7,156.79

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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.