Home / 15,763.21-21,756.11-10,100.40

Finding the Fourth Proportional to 15,763.21, 21,756.11 and 10,100.40

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Solution

The fourth proportional to 15,763.21, 21,756.11 and 10,100.40 is: 13,940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.21 : 21,756.11 = 10,100.40 : x
  2. Step 2: Convert to fraction form
    15,763.21/21,756.11 = 10,100.40/x
  3. Step 3: Cross multiply
    15,763.21x = 21,756.11 × 10,100.40
  4. Step 4: Simplify right side
    15,763.21x = 219,745,338.17
  5. Step 5: Solve for x
    x = 219,745,338.17/15,763.21
  6. Step 6: Final answer
    x = 13,940.39

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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.