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Finding the Fourth Proportional to 18,420.52, 25,420.32 and 10,037

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Solution

The fourth proportional to 18,420.52, 25,420.32 and 10,037 is: 13,851.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.52 : 25,420.32 = 10,037 : x
  2. Step 2: Convert to fraction form
    18,420.52/25,420.32 = 10,037/x
  3. Step 3: Cross multiply
    18,420.52x = 25,420.32 × 10,037
  4. Step 4: Simplify right side
    18,420.52x = 255,143,751.84
  5. Step 5: Solve for x
    x = 255,143,751.84/18,420.52
  6. Step 6: Final answer
    x = 13,851.06

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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.