Home / 19,286.08-26,605.20-12,987.52

Finding the Fourth Proportional to 19,286.08, 26,605.20 and 12,987.52

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Solution

The fourth proportional to 19,286.08, 26,605.20 and 12,987.52 is: 17,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.08 : 26,605.20 = 12,987.52 : x
  2. Step 2: Convert to fraction form
    19,286.08/26,605.20 = 12,987.52/x
  3. Step 3: Cross multiply
    19,286.08x = 26,605.20 × 12,987.52
  4. Step 4: Simplify right side
    19,286.08x = 345,535,567.10
  5. Step 5: Solve for x
    x = 345,535,567.10/19,286.08
  6. Step 6: Final answer
    x = 17,916.32

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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.