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Finding the Fourth Proportional to 18,875.91, 26,049.05 and 10,378.40

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Solution

The fourth proportional to 18,875.91, 26,049.05 and 10,378.40 is: 14,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.91 : 26,049.05 = 10,378.40 : x
  2. Step 2: Convert to fraction form
    18,875.91/26,049.05 = 10,378.40/x
  3. Step 3: Cross multiply
    18,875.91x = 26,049.05 × 10,378.40
  4. Step 4: Simplify right side
    18,875.91x = 270,347,408.63
  5. Step 5: Solve for x
    x = 270,347,408.63/18,875.91
  6. Step 6: Final answer
    x = 14,322.35

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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.