Home / 13,790.53-19,031.66-7,824.11

Finding the Fourth Proportional to 13,790.53, 19,031.66 and 7,824.11

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Solution

The fourth proportional to 13,790.53, 19,031.66 and 7,824.11 is: 10,797.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.53 : 19,031.66 = 7,824.11 : x
  2. Step 2: Convert to fraction form
    13,790.53/19,031.66 = 7,824.11/x
  3. Step 3: Cross multiply
    13,790.53x = 19,031.66 × 7,824.11
  4. Step 4: Simplify right side
    13,790.53x = 148,905,868.46
  5. Step 5: Solve for x
    x = 148,905,868.46/13,790.53
  6. Step 6: Final answer
    x = 10,797.69

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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.