Home / 14,223.72-19,639.14-9,190.92

Finding the Fourth Proportional to 14,223.72, 19,639.14 and 9,190.92

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Solution

The fourth proportional to 14,223.72, 19,639.14 and 9,190.92 is: 12,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,223.72 : 19,639.14 = 9,190.92 : x
  2. Step 2: Convert to fraction form
    14,223.72/19,639.14 = 9,190.92/x
  3. Step 3: Cross multiply
    14,223.72x = 19,639.14 × 9,190.92
  4. Step 4: Simplify right side
    14,223.72x = 180,501,764.61
  5. Step 5: Solve for x
    x = 180,501,764.61/14,223.72
  6. Step 6: Final answer
    x = 12,690.19

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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.