Home / 15,497.19-21,385.67-8,783.43

Finding the Fourth Proportional to 15,497.19, 21,385.67 and 8,783.43

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Solution

The fourth proportional to 15,497.19, 21,385.67 and 8,783.43 is: 12,120.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.19 : 21,385.67 = 8,783.43 : x
  2. Step 2: Convert to fraction form
    15,497.19/21,385.67 = 8,783.43/x
  3. Step 3: Cross multiply
    15,497.19x = 21,385.67 × 8,783.43
  4. Step 4: Simplify right side
    15,497.19x = 187,839,491.53
  5. Step 5: Solve for x
    x = 187,839,491.53/15,497.19
  6. Step 6: Final answer
    x = 12,120.87

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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.