Home / 13,748.80-18,981.12-9,506.08

Finding the Fourth Proportional to 13,748.80, 18,981.12 and 9,506.08

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Solution

The fourth proportional to 13,748.80, 18,981.12 and 9,506.08 is: 13,123.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.80 : 18,981.12 = 9,506.08 : x
  2. Step 2: Convert to fraction form
    13,748.80/18,981.12 = 9,506.08/x
  3. Step 3: Cross multiply
    13,748.80x = 18,981.12 × 9,506.08
  4. Step 4: Simplify right side
    13,748.80x = 180,436,045.21
  5. Step 5: Solve for x
    x = 180,436,045.21/13,748.80
  6. Step 6: Final answer
    x = 13,123.77

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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.