Home / 10,439.30-14,408.53-8,166.13

Finding the Fourth Proportional to 10,439.30, 14,408.53 and 8,166.13

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Solution

The fourth proportional to 10,439.30, 14,408.53 and 8,166.13 is: 11,271.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.30 : 14,408.53 = 8,166.13 : x
  2. Step 2: Convert to fraction form
    10,439.30/14,408.53 = 8,166.13/x
  3. Step 3: Cross multiply
    10,439.30x = 14,408.53 × 8,166.13
  4. Step 4: Simplify right side
    10,439.30x = 117,661,999.63
  5. Step 5: Solve for x
    x = 117,661,999.63/10,439.30
  6. Step 6: Final answer
    x = 11,271.07

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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.