Home / 13,130.12-18,126.25-10,139.24

Finding the Fourth Proportional to 13,130.12, 18,126.25 and 10,139.24

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Solution

The fourth proportional to 13,130.12, 18,126.25 and 10,139.24 is: 13,997.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.12 : 18,126.25 = 10,139.24 : x
  2. Step 2: Convert to fraction form
    13,130.12/18,126.25 = 10,139.24/x
  3. Step 3: Cross multiply
    13,130.12x = 18,126.25 × 10,139.24
  4. Step 4: Simplify right side
    13,130.12x = 183,786,283.07
  5. Step 5: Solve for x
    x = 183,786,283.07/13,130.12
  6. Step 6: Final answer
    x = 13,997.31

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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.