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Finding the Fourth Proportional to 18,703.52, 25,810.08 and 10,319.84

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Solution

The fourth proportional to 18,703.52, 25,810.08 and 10,319.84 is: 14,240.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.52 : 25,810.08 = 10,319.84 : x
  2. Step 2: Convert to fraction form
    18,703.52/25,810.08 = 10,319.84/x
  3. Step 3: Cross multiply
    18,703.52x = 25,810.08 × 10,319.84
  4. Step 4: Simplify right side
    18,703.52x = 266,355,895.99
  5. Step 5: Solve for x
    x = 266,355,895.99/18,703.52
  6. Step 6: Final answer
    x = 14,240.95

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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.