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Finding the Fourth Proportional to 19,357.68, 26,684.96 and 15,103.92

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Solution

The fourth proportional to 19,357.68, 26,684.96 and 15,103.92 is: 20,821.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,357.68 : 26,684.96 = 15,103.92 : x
  2. Step 2: Convert to fraction form
    19,357.68/26,684.96 = 15,103.92/x
  3. Step 3: Cross multiply
    19,357.68x = 26,684.96 × 15,103.92
  4. Step 4: Simplify right side
    19,357.68x = 403,047,501.04
  5. Step 5: Solve for x
    x = 403,047,501.04/19,357.68
  6. Step 6: Final answer
    x = 20,821.06

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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.