Home / 10,858.40-16,280.30-4,281.20

Finding the Fourth Proportional to 10,858.40, 16,280.30 and 4,281.20

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Solution

The fourth proportional to 10,858.40, 16,280.30 and 4,281.20 is: 6,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.40 : 16,280.30 = 4,281.20 : x
  2. Step 2: Convert to fraction form
    10,858.40/16,280.30 = 4,281.20/x
  3. Step 3: Cross multiply
    10,858.40x = 16,280.30 × 4,281.20
  4. Step 4: Simplify right side
    10,858.40x = 69,699,220.36
  5. Step 5: Solve for x
    x = 69,699,220.36/10,858.40
  6. Step 6: Final answer
    x = 6,418.92

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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.