Home / 21,685.86-29,931.49-14,119.02

Finding the Fourth Proportional to 21,685.86, 29,931.49 and 14,119.02

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Solution

The fourth proportional to 21,685.86, 29,931.49 and 14,119.02 is: 19,487.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.86 : 29,931.49 = 14,119.02 : x
  2. Step 2: Convert to fraction form
    21,685.86/29,931.49 = 14,119.02/x
  3. Step 3: Cross multiply
    21,685.86x = 29,931.49 × 14,119.02
  4. Step 4: Simplify right side
    21,685.86x = 422,603,305.94
  5. Step 5: Solve for x
    x = 422,603,305.94/21,685.86
  6. Step 6: Final answer
    x = 19,487.51

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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.