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Finding the Fourth Proportional to 18,762.04, 25,890.60 and 10,378

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Solution

The fourth proportional to 18,762.04, 25,890.60 and 10,378 is: 14,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.04 : 25,890.60 = 10,378 : x
  2. Step 2: Convert to fraction form
    18,762.04/25,890.60 = 10,378/x
  3. Step 3: Cross multiply
    18,762.04x = 25,890.60 × 10,378
  4. Step 4: Simplify right side
    18,762.04x = 268,692,646.80
  5. Step 5: Solve for x
    x = 268,692,646.80/18,762.04
  6. Step 6: Final answer
    x = 14,321.08

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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.