Home / 31,915.24-47,872.88-8,541.06

Finding the Fourth Proportional to 31,915.24, 47,872.88 and 8,541.06

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Solution

The fourth proportional to 31,915.24, 47,872.88 and 8,541.06 is: 12,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,915.24 : 47,872.88 = 8,541.06 : x
  2. Step 2: Convert to fraction form
    31,915.24/47,872.88 = 8,541.06/x
  3. Step 3: Cross multiply
    31,915.24x = 47,872.88 × 8,541.06
  4. Step 4: Simplify right side
    31,915.24x = 408,885,140.45
  5. Step 5: Solve for x
    x = 408,885,140.45/31,915.24
  6. Step 6: Final answer
    x = 12,811.60

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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.