Home / 15,639.84-23,443.20-7,312.86

Finding the Fourth Proportional to 15,639.84, 23,443.20 and 7,312.86

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Solution

The fourth proportional to 15,639.84, 23,443.20 and 7,312.86 is: 10,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.84 : 23,443.20 = 7,312.86 : x
  2. Step 2: Convert to fraction form
    15,639.84/23,443.20 = 7,312.86/x
  3. Step 3: Cross multiply
    15,639.84x = 23,443.20 × 7,312.86
  4. Step 4: Simplify right side
    15,639.84x = 171,436,839.55
  5. Step 5: Solve for x
    x = 171,436,839.55/15,639.84
  6. Step 6: Final answer
    x = 10,961.55

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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.