Home / 31,055.85-42,857.64-16,908.93

Finding the Fourth Proportional to 31,055.85, 42,857.64 and 16,908.93

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Solution

The fourth proportional to 31,055.85, 42,857.64 and 16,908.93 is: 23,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,055.85 : 42,857.64 = 16,908.93 : x
  2. Step 2: Convert to fraction form
    31,055.85/42,857.64 = 16,908.93/x
  3. Step 3: Cross multiply
    31,055.85x = 42,857.64 × 16,908.93
  4. Step 4: Simplify right side
    31,055.85x = 724,676,834.73
  5. Step 5: Solve for x
    x = 724,676,834.73/31,055.85
  6. Step 6: Final answer
    x = 23,334.63

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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.