Home / 14,335.08-19,781.45-7,961.15

Finding the Fourth Proportional to 14,335.08, 19,781.45 and 7,961.15

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Solution

The fourth proportional to 14,335.08, 19,781.45 and 7,961.15 is: 10,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,335.08 : 19,781.45 = 7,961.15 : x
  2. Step 2: Convert to fraction form
    14,335.08/19,781.45 = 7,961.15/x
  3. Step 3: Cross multiply
    14,335.08x = 19,781.45 × 7,961.15
  4. Step 4: Simplify right side
    14,335.08x = 157,483,130.17
  5. Step 5: Solve for x
    x = 157,483,130.17/14,335.08
  6. Step 6: Final answer
    x = 10,985.86

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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.