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Finding the Fourth Proportional to 31,330.99, 43,242.93 and 17,900.99

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Solution

The fourth proportional to 31,330.99, 43,242.93 and 17,900.99 is: 24,706.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.99 : 43,242.93 = 17,900.99 : x
  2. Step 2: Convert to fraction form
    31,330.99/43,242.93 = 17,900.99/x
  3. Step 3: Cross multiply
    31,330.99x = 43,242.93 × 17,900.99
  4. Step 4: Simplify right side
    31,330.99x = 774,091,257.50
  5. Step 5: Solve for x
    x = 774,091,257.50/31,330.99
  6. Step 6: Final answer
    x = 24,706.89

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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.