Home / 10,860.40-16,279.48-4,283.92

Finding the Fourth Proportional to 10,860.40, 16,279.48 and 4,283.92

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Solution

The fourth proportional to 10,860.40, 16,279.48 and 4,283.92 is: 6,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.40 : 16,279.48 = 4,283.92 : x
  2. Step 2: Convert to fraction form
    10,860.40/16,279.48 = 4,283.92/x
  3. Step 3: Cross multiply
    10,860.40x = 16,279.48 × 4,283.92
  4. Step 4: Simplify right side
    10,860.40x = 69,739,989.96
  5. Step 5: Solve for x
    x = 69,739,989.96/10,860.40
  6. Step 6: Final answer
    x = 6,421.49

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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.