Home / 19,565.40-29,352.30-7,878.63

Finding the Fourth Proportional to 19,565.40, 29,352.30 and 7,878.63

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Solution

The fourth proportional to 19,565.40, 29,352.30 and 7,878.63 is: 11,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,565.40 : 29,352.30 = 7,878.63 : x
  2. Step 2: Convert to fraction form
    19,565.40/29,352.30 = 7,878.63/x
  3. Step 3: Cross multiply
    19,565.40x = 29,352.30 × 7,878.63
  4. Step 4: Simplify right side
    19,565.40x = 231,255,911.35
  5. Step 5: Solve for x
    x = 231,255,911.35/19,565.40
  6. Step 6: Final answer
    x = 11,819.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.