Home / 10,138.96-15,176.58-6,445.36

Finding the Fourth Proportional to 10,138.96, 15,176.58 and 6,445.36

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Solution

The fourth proportional to 10,138.96, 15,176.58 and 6,445.36 is: 9,647.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.96 : 15,176.58 = 6,445.36 : x
  2. Step 2: Convert to fraction form
    10,138.96/15,176.58 = 6,445.36/x
  3. Step 3: Cross multiply
    10,138.96x = 15,176.58 × 6,445.36
  4. Step 4: Simplify right side
    10,138.96x = 97,818,521.67
  5. Step 5: Solve for x
    x = 97,818,521.67/10,138.96
  6. Step 6: Final answer
    x = 9,647.79

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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.