Home / 12,319.29-18,492.75-4,928.90

Finding the Fourth Proportional to 12,319.29, 18,492.75 and 4,928.90

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Solution

The fourth proportional to 12,319.29, 18,492.75 and 4,928.90 is: 7,398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.29 : 18,492.75 = 4,928.90 : x
  2. Step 2: Convert to fraction form
    12,319.29/18,492.75 = 4,928.90/x
  3. Step 3: Cross multiply
    12,319.29x = 18,492.75 × 4,928.90
  4. Step 4: Simplify right side
    12,319.29x = 91,148,915.48
  5. Step 5: Solve for x
    x = 91,148,915.48/12,319.29
  6. Step 6: Final answer
    x = 7,398.88

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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.