Home / 10,434.15-14,390.75-9,172.53

Finding the Fourth Proportional to 10,434.15, 14,390.75 and 9,172.53

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Solution

The fourth proportional to 10,434.15, 14,390.75 and 9,172.53 is: 12,650.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,434.15 : 14,390.75 = 9,172.53 : x
  2. Step 2: Convert to fraction form
    10,434.15/14,390.75 = 9,172.53/x
  3. Step 3: Cross multiply
    10,434.15x = 14,390.75 × 9,172.53
  4. Step 4: Simplify right side
    10,434.15x = 131,999,586.10
  5. Step 5: Solve for x
    x = 131,999,586.10/10,434.15
  6. Step 6: Final answer
    x = 12,650.73

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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.