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Finding the Fourth Proportional to 31,737.95, 43,808.04 and 18,317.99

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Solution

The fourth proportional to 31,737.95, 43,808.04 and 18,317.99 is: 25,284.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,737.95 : 43,808.04 = 18,317.99 : x
  2. Step 2: Convert to fraction form
    31,737.95/43,808.04 = 18,317.99/x
  3. Step 3: Cross multiply
    31,737.95x = 43,808.04 × 18,317.99
  4. Step 4: Simplify right side
    31,737.95x = 802,475,238.64
  5. Step 5: Solve for x
    x = 802,475,238.64/31,737.95
  6. Step 6: Final answer
    x = 25,284.41

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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.