Home / 13,915.12-19,208.28-8,327.92

Finding the Fourth Proportional to 13,915.12, 19,208.28 and 8,327.92

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Solution

The fourth proportional to 13,915.12, 19,208.28 and 8,327.92 is: 11,495.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.12 : 19,208.28 = 8,327.92 : x
  2. Step 2: Convert to fraction form
    13,915.12/19,208.28 = 8,327.92/x
  3. Step 3: Cross multiply
    13,915.12x = 19,208.28 × 8,327.92
  4. Step 4: Simplify right side
    13,915.12x = 159,965,019.18
  5. Step 5: Solve for x
    x = 159,965,019.18/13,915.12
  6. Step 6: Final answer
    x = 11,495.77

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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.