Home / 13,853.38-19,117.56-7,565.75

Finding the Fourth Proportional to 13,853.38, 19,117.56 and 7,565.75

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Solution

The fourth proportional to 13,853.38, 19,117.56 and 7,565.75 is: 10,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.38 : 19,117.56 = 7,565.75 : x
  2. Step 2: Convert to fraction form
    13,853.38/19,117.56 = 7,565.75/x
  3. Step 3: Cross multiply
    13,853.38x = 19,117.56 × 7,565.75
  4. Step 4: Simplify right side
    13,853.38x = 144,638,679.57
  5. Step 5: Solve for x
    x = 144,638,679.57/13,853.38
  6. Step 6: Final answer
    x = 10,440.68

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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.