Home / 19,231.11-28,809.27-12,637.26

Finding the Fourth Proportional to 19,231.11, 28,809.27 and 12,637.26

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Solution

The fourth proportional to 19,231.11, 28,809.27 and 12,637.26 is: 18,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.11 : 28,809.27 = 12,637.26 : x
  2. Step 2: Convert to fraction form
    19,231.11/28,809.27 = 12,637.26/x
  3. Step 3: Cross multiply
    19,231.11x = 28,809.27 × 12,637.26
  4. Step 4: Simplify right side
    19,231.11x = 364,070,235.40
  5. Step 5: Solve for x
    x = 364,070,235.40/19,231.11
  6. Step 6: Final answer
    x = 18,931.32

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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.