Home / 13,139.04-18,137.28-10,615.04

Finding the Fourth Proportional to 13,139.04, 18,137.28 and 10,615.04

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Solution

The fourth proportional to 13,139.04, 18,137.28 and 10,615.04 is: 14,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.04 : 18,137.28 = 10,615.04 : x
  2. Step 2: Convert to fraction form
    13,139.04/18,137.28 = 10,615.04/x
  3. Step 3: Cross multiply
    13,139.04x = 18,137.28 × 10,615.04
  4. Step 4: Simplify right side
    13,139.04x = 192,527,952.69
  5. Step 5: Solve for x
    x = 192,527,952.69/13,139.04
  6. Step 6: Final answer
    x = 14,653.12

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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.