Home / 13,434.10-18,501.36-13,143.48

Finding the Fourth Proportional to 13,434.10, 18,501.36 and 13,143.48

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Solution

The fourth proportional to 13,434.10, 18,501.36 and 13,143.48 is: 18,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.10 : 18,501.36 = 13,143.48 : x
  2. Step 2: Convert to fraction form
    13,434.10/18,501.36 = 13,143.48/x
  3. Step 3: Cross multiply
    13,434.10x = 18,501.36 × 13,143.48
  4. Step 4: Simplify right side
    13,434.10x = 243,172,255.13
  5. Step 5: Solve for x
    x = 243,172,255.13/13,434.10
  6. Step 6: Final answer
    x = 18,101.12

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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.