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Finding the Fourth Proportional to 18,888.79, 26,065.50 and 10,504.75

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Solution

The fourth proportional to 18,888.79, 26,065.50 and 10,504.75 is: 14,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.79 : 26,065.50 = 10,504.75 : x
  2. Step 2: Convert to fraction form
    18,888.79/26,065.50 = 10,504.75/x
  3. Step 3: Cross multiply
    18,888.79x = 26,065.50 × 10,504.75
  4. Step 4: Simplify right side
    18,888.79x = 273,811,561.13
  5. Step 5: Solve for x
    x = 273,811,561.13/18,888.79
  6. Step 6: Final answer
    x = 14,495.98

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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.