Home / 31,406.16-43,342.92-17,981.64

Finding the Fourth Proportional to 31,406.16, 43,342.92 and 17,981.64

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Solution

The fourth proportional to 31,406.16, 43,342.92 and 17,981.64 is: 24,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.16 : 43,342.92 = 17,981.64 : x
  2. Step 2: Convert to fraction form
    31,406.16/43,342.92 = 17,981.64/x
  3. Step 3: Cross multiply
    31,406.16x = 43,342.92 × 17,981.64
  4. Step 4: Simplify right side
    31,406.16x = 779,376,783.99
  5. Step 5: Solve for x
    x = 779,376,783.99/31,406.16
  6. Step 6: Final answer
    x = 24,816.05

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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.