Home / 13,748.21-18,981.13-9,448.71

Finding the Fourth Proportional to 13,748.21, 18,981.13 and 9,448.71

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Solution

The fourth proportional to 13,748.21, 18,981.13 and 9,448.71 is: 13,045.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.21 : 18,981.13 = 9,448.71 : x
  2. Step 2: Convert to fraction form
    13,748.21/18,981.13 = 9,448.71/x
  3. Step 3: Cross multiply
    13,748.21x = 18,981.13 × 9,448.71
  4. Step 4: Simplify right side
    13,748.21x = 179,347,151.35
  5. Step 5: Solve for x
    x = 179,347,151.35/13,748.21
  6. Step 6: Final answer
    x = 13,045.13

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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.