Home / 19,257.60-26,565.12-13,278.72

Finding the Fourth Proportional to 19,257.60, 26,565.12 and 13,278.72

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Solution

The fourth proportional to 19,257.60, 26,565.12 and 13,278.72 is: 18,317.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,257.60 : 26,565.12 = 13,278.72 : x
  2. Step 2: Convert to fraction form
    19,257.60/26,565.12 = 13,278.72/x
  3. Step 3: Cross multiply
    19,257.60x = 26,565.12 × 13,278.72
  4. Step 4: Simplify right side
    19,257.60x = 352,750,790.25
  5. Step 5: Solve for x
    x = 352,750,790.25/19,257.60
  6. Step 6: Final answer
    x = 18,317.48

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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.