Home / 10,845.40-16,287.30-8,386.20

Finding the Fourth Proportional to 10,845.40, 16,287.30 and 8,386.20

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Solution

The fourth proportional to 10,845.40, 16,287.30 and 8,386.20 is: 12,594.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,845.40 : 16,287.30 = 8,386.20 : x
  2. Step 2: Convert to fraction form
    10,845.40/16,287.30 = 8,386.20/x
  3. Step 3: Cross multiply
    10,845.40x = 16,287.30 × 8,386.20
  4. Step 4: Simplify right side
    10,845.40x = 136,588,555.26
  5. Step 5: Solve for x
    x = 136,588,555.26/10,845.40
  6. Step 6: Final answer
    x = 12,594.15

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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.