Home / 13,790-19,031.18-7,822.18

Finding the Fourth Proportional to 13,790, 19,031.18 and 7,822.18

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Solution

The fourth proportional to 13,790, 19,031.18 and 7,822.18 is: 10,795.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790 : 19,031.18 = 7,822.18 : x
  2. Step 2: Convert to fraction form
    13,790/19,031.18 = 7,822.18/x
  3. Step 3: Cross multiply
    13,790x = 19,031.18 × 7,822.18
  4. Step 4: Simplify right side
    13,790x = 148,865,315.57
  5. Step 5: Solve for x
    x = 148,865,315.57/13,790
  6. Step 6: Final answer
    x = 10,795.16

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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.