Home / 13,748.10-18,979.29-11,501.70

Finding the Fourth Proportional to 13,748.10, 18,979.29 and 11,501.70

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Solution

The fourth proportional to 13,748.10, 18,979.29 and 11,501.70 is: 15,878.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.10 : 18,979.29 = 11,501.70 : x
  2. Step 2: Convert to fraction form
    13,748.10/18,979.29 = 11,501.70/x
  3. Step 3: Cross multiply
    13,748.10x = 18,979.29 × 11,501.70
  4. Step 4: Simplify right side
    13,748.10x = 218,294,099.79
  5. Step 5: Solve for x
    x = 218,294,099.79/13,748.10
  6. Step 6: Final answer
    x = 15,878.13

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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.