Home / 8,814.32-12,174.40-6,420.48

Finding the Fourth Proportional to 8,814.32, 12,174.40 and 6,420.48

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Solution

The fourth proportional to 8,814.32, 12,174.40 and 6,420.48 is: 8,868.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,814.32 : 12,174.40 = 6,420.48 : x
  2. Step 2: Convert to fraction form
    8,814.32/12,174.40 = 6,420.48/x
  3. Step 3: Cross multiply
    8,814.32x = 12,174.40 × 6,420.48
  4. Step 4: Simplify right side
    8,814.32x = 78,165,491.71
  5. Step 5: Solve for x
    x = 78,165,491.71/8,814.32
  6. Step 6: Final answer
    x = 8,868.01

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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.