Home / 10,404.90-15,527.26-8,315.10

Finding the Fourth Proportional to 10,404.90, 15,527.26 and 8,315.10

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Solution

The fourth proportional to 10,404.90, 15,527.26 and 8,315.10 is: 12,408.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,404.90 : 15,527.26 = 8,315.10 : x
  2. Step 2: Convert to fraction form
    10,404.90/15,527.26 = 8,315.10/x
  3. Step 3: Cross multiply
    10,404.90x = 15,527.26 × 8,315.10
  4. Step 4: Simplify right side
    10,404.90x = 129,110,678.05
  5. Step 5: Solve for x
    x = 129,110,678.05/10,404.90
  6. Step 6: Final answer
    x = 12,408.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.