Home / 28,256.40-42,384.92-8,535.12

Finding the Fourth Proportional to 28,256.40, 42,384.92 and 8,535.12

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Solution

The fourth proportional to 28,256.40, 42,384.92 and 8,535.12 is: 12,802.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.40 : 42,384.92 = 8,535.12 : x
  2. Step 2: Convert to fraction form
    28,256.40/42,384.92 = 8,535.12/x
  3. Step 3: Cross multiply
    28,256.40x = 42,384.92 × 8,535.12
  4. Step 4: Simplify right side
    28,256.40x = 361,760,378.39
  5. Step 5: Solve for x
    x = 361,760,378.39/28,256.40
  6. Step 6: Final answer
    x = 12,802.78

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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.