Home / 13,865.19-19,142.90-12,370.52

Finding the Fourth Proportional to 13,865.19, 19,142.90 and 12,370.52

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Solution

The fourth proportional to 13,865.19, 19,142.90 and 12,370.52 is: 17,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.19 : 19,142.90 = 12,370.52 : x
  2. Step 2: Convert to fraction form
    13,865.19/19,142.90 = 12,370.52/x
  3. Step 3: Cross multiply
    13,865.19x = 19,142.90 × 12,370.52
  4. Step 4: Simplify right side
    13,865.19x = 236,807,562.52
  5. Step 5: Solve for x
    x = 236,807,562.52/13,865.19
  6. Step 6: Final answer
    x = 17,079.29

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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.