Home / 21,140.15-29,173.47-11,708.71

Finding the Fourth Proportional to 21,140.15, 29,173.47 and 11,708.71

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Solution

The fourth proportional to 21,140.15, 29,173.47 and 11,708.71 is: 16,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.15 : 29,173.47 = 11,708.71 : x
  2. Step 2: Convert to fraction form
    21,140.15/29,173.47 = 11,708.71/x
  3. Step 3: Cross multiply
    21,140.15x = 29,173.47 × 11,708.71
  4. Step 4: Simplify right side
    21,140.15x = 341,583,699.92
  5. Step 5: Solve for x
    x = 341,583,699.92/21,140.15
  6. Step 6: Final answer
    x = 16,158.05

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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.