Home / 19,395.52-26,781.60-15,811.04

Finding the Fourth Proportional to 19,395.52, 26,781.60 and 15,811.04

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Solution

The fourth proportional to 19,395.52, 26,781.60 and 15,811.04 is: 21,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,395.52 : 26,781.60 = 15,811.04 : x
  2. Step 2: Convert to fraction form
    19,395.52/26,781.60 = 15,811.04/x
  3. Step 3: Cross multiply
    19,395.52x = 26,781.60 × 15,811.04
  4. Step 4: Simplify right side
    19,395.52x = 423,444,948.86
  5. Step 5: Solve for x
    x = 423,444,948.86/19,395.52
  6. Step 6: Final answer
    x = 21,832.10

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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.