Home / 15,228.32-21,012.64-9,256.80

Finding the Fourth Proportional to 15,228.32, 21,012.64 and 9,256.80

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Solution

The fourth proportional to 15,228.32, 21,012.64 and 9,256.80 is: 12,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.32 : 21,012.64 = 9,256.80 : x
  2. Step 2: Convert to fraction form
    15,228.32/21,012.64 = 9,256.80/x
  3. Step 3: Cross multiply
    15,228.32x = 21,012.64 × 9,256.80
  4. Step 4: Simplify right side
    15,228.32x = 194,509,805.95
  5. Step 5: Solve for x
    x = 194,509,805.95/15,228.32
  6. Step 6: Final answer
    x = 12,772.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.