Home / 15,428.52-21,284.46-9,055.62

Finding the Fourth Proportional to 15,428.52, 21,284.46 and 9,055.62

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Solution

The fourth proportional to 15,428.52, 21,284.46 and 9,055.62 is: 12,492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.52 : 21,284.46 = 9,055.62 : x
  2. Step 2: Convert to fraction form
    15,428.52/21,284.46 = 9,055.62/x
  3. Step 3: Cross multiply
    15,428.52x = 21,284.46 × 9,055.62
  4. Step 4: Simplify right side
    15,428.52x = 192,743,981.67
  5. Step 5: Solve for x
    x = 192,743,981.67/15,428.52
  6. Step 6: Final answer
    x = 12,492.71

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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.