Home / 18,970.35-28,465.11-9,117.92

Finding the Fourth Proportional to 18,970.35, 28,465.11 and 9,117.92

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Solution

The fourth proportional to 18,970.35, 28,465.11 and 9,117.92 is: 13,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.35 : 28,465.11 = 9,117.92 : x
  2. Step 2: Convert to fraction form
    18,970.35/28,465.11 = 9,117.92/x
  3. Step 3: Cross multiply
    18,970.35x = 28,465.11 × 9,117.92
  4. Step 4: Simplify right side
    18,970.35x = 259,542,453.45
  5. Step 5: Solve for x
    x = 259,542,453.45/18,970.35
  6. Step 6: Final answer
    x = 13,681.48

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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.