Home / 13,915.56-19,208.70-8,612.76

Finding the Fourth Proportional to 13,915.56, 19,208.70 and 8,612.76

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Solution

The fourth proportional to 13,915.56, 19,208.70 and 8,612.76 is: 11,888.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.56 : 19,208.70 = 8,612.76 : x
  2. Step 2: Convert to fraction form
    13,915.56/19,208.70 = 8,612.76/x
  3. Step 3: Cross multiply
    13,915.56x = 19,208.70 × 8,612.76
  4. Step 4: Simplify right side
    13,915.56x = 165,439,923.01
  5. Step 5: Solve for x
    x = 165,439,923.01/13,915.56
  6. Step 6: Final answer
    x = 11,888.84

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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.