Home / 21,158.84-31,616.81-16,133.60

Finding the Fourth Proportional to 21,158.84, 31,616.81 and 16,133.60

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Solution

The fourth proportional to 21,158.84, 31,616.81 and 16,133.60 is: 24,107.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.84 : 31,616.81 = 16,133.60 : x
  2. Step 2: Convert to fraction form
    21,158.84/31,616.81 = 16,133.60/x
  3. Step 3: Cross multiply
    21,158.84x = 31,616.81 × 16,133.60
  4. Step 4: Simplify right side
    21,158.84x = 510,092,965.82
  5. Step 5: Solve for x
    x = 510,092,965.82/21,158.84
  6. Step 6: Final answer
    x = 24,107.79

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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.