Home / 28,365.17-42,535.40-8,639.11

Finding the Fourth Proportional to 28,365.17, 42,535.40 and 8,639.11

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Solution

The fourth proportional to 28,365.17, 42,535.40 and 8,639.11 is: 12,954.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.17 : 42,535.40 = 8,639.11 : x
  2. Step 2: Convert to fraction form
    28,365.17/42,535.40 = 8,639.11/x
  3. Step 3: Cross multiply
    28,365.17x = 42,535.40 × 8,639.11
  4. Step 4: Simplify right side
    28,365.17x = 367,467,786.82
  5. Step 5: Solve for x
    x = 367,467,786.82/28,365.17
  6. Step 6: Final answer
    x = 12,954.89

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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.