Home / 13,642.16-20,342.75-11,983.07

Finding the Fourth Proportional to 13,642.16, 20,342.75 and 11,983.07

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Solution

The fourth proportional to 13,642.16, 20,342.75 and 11,983.07 is: 17,868.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.16 : 20,342.75 = 11,983.07 : x
  2. Step 2: Convert to fraction form
    13,642.16/20,342.75 = 11,983.07/x
  3. Step 3: Cross multiply
    13,642.16x = 20,342.75 × 11,983.07
  4. Step 4: Simplify right side
    13,642.16x = 243,768,597.24
  5. Step 5: Solve for x
    x = 243,768,597.24/13,642.16
  6. Step 6: Final answer
    x = 17,868.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.