Home / 30,953.19-42,715.50-16,805.73

Finding the Fourth Proportional to 30,953.19, 42,715.50 and 16,805.73

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Solution

The fourth proportional to 30,953.19, 42,715.50 and 16,805.73 is: 23,191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,953.19 : 42,715.50 = 16,805.73 : x
  2. Step 2: Convert to fraction form
    30,953.19/42,715.50 = 16,805.73/x
  3. Step 3: Cross multiply
    30,953.19x = 42,715.50 × 16,805.73
  4. Step 4: Simplify right side
    30,953.19x = 717,865,159.82
  5. Step 5: Solve for x
    x = 717,865,159.82/30,953.19
  6. Step 6: Final answer
    x = 23,191.96

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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.