Home / 15,489.11-21,400.05-10,794.35

Finding the Fourth Proportional to 15,489.11, 21,400.05 and 10,794.35

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Solution

The fourth proportional to 15,489.11, 21,400.05 and 10,794.35 is: 14,913.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.11 : 21,400.05 = 10,794.35 : x
  2. Step 2: Convert to fraction form
    15,489.11/21,400.05 = 10,794.35/x
  3. Step 3: Cross multiply
    15,489.11x = 21,400.05 × 10,794.35
  4. Step 4: Simplify right side
    15,489.11x = 230,999,522.72
  5. Step 5: Solve for x
    x = 230,999,522.72/15,489.11
  6. Step 6: Final answer
    x = 14,913.68

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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.