Home / 10,478.22-15,722.46-4,931.34

Finding the Fourth Proportional to 10,478.22, 15,722.46 and 4,931.34

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Solution

The fourth proportional to 10,478.22, 15,722.46 and 4,931.34 is: 7,399.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.22 : 15,722.46 = 4,931.34 : x
  2. Step 2: Convert to fraction form
    10,478.22/15,722.46 = 4,931.34/x
  3. Step 3: Cross multiply
    10,478.22x = 15,722.46 × 4,931.34
  4. Step 4: Simplify right side
    10,478.22x = 77,532,795.90
  5. Step 5: Solve for x
    x = 77,532,795.90/10,478.22
  6. Step 6: Final answer
    x = 7,399.42

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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.