Home / 18,746.79-28,129.35-8,215.37

Finding the Fourth Proportional to 18,746.79, 28,129.35 and 8,215.37

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Solution

The fourth proportional to 18,746.79, 28,129.35 and 8,215.37 is: 12,327.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.79 : 28,129.35 = 8,215.37 : x
  2. Step 2: Convert to fraction form
    18,746.79/28,129.35 = 8,215.37/x
  3. Step 3: Cross multiply
    18,746.79x = 28,129.35 × 8,215.37
  4. Step 4: Simplify right side
    18,746.79x = 231,092,877.46
  5. Step 5: Solve for x
    x = 231,092,877.46/18,746.79
  6. Step 6: Final answer
    x = 12,327.06

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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.