Home / 15,287.04-21,078.11-14,153.45

Finding the Fourth Proportional to 15,287.04, 21,078.11 and 14,153.45

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Solution

The fourth proportional to 15,287.04, 21,078.11 and 14,153.45 is: 19,515.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.04 : 21,078.11 = 14,153.45 : x
  2. Step 2: Convert to fraction form
    15,287.04/21,078.11 = 14,153.45/x
  3. Step 3: Cross multiply
    15,287.04x = 21,078.11 × 14,153.45
  4. Step 4: Simplify right side
    15,287.04x = 298,327,975.98
  5. Step 5: Solve for x
    x = 298,327,975.98/15,287.04
  6. Step 6: Final answer
    x = 19,515.09

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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.