Home / 15,470.43-21,336-10,428.03

Finding the Fourth Proportional to 15,470.43, 21,336 and 10,428.03

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Solution

The fourth proportional to 15,470.43, 21,336 and 10,428.03 is: 14,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.43 : 21,336 = 10,428.03 : x
  2. Step 2: Convert to fraction form
    15,470.43/21,336 = 10,428.03/x
  3. Step 3: Cross multiply
    15,470.43x = 21,336 × 10,428.03
  4. Step 4: Simplify right side
    15,470.43x = 222,492,448.08
  5. Step 5: Solve for x
    x = 222,492,448.08/15,470.43
  6. Step 6: Final answer
    x = 14,381.79

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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.