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Finding the Fourth Proportional to 18,395.48, 25,384.50 and 10,011.80

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Solution

The fourth proportional to 18,395.48, 25,384.50 and 10,011.80 is: 13,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.48 : 25,384.50 = 10,011.80 : x
  2. Step 2: Convert to fraction form
    18,395.48/25,384.50 = 10,011.80/x
  3. Step 3: Cross multiply
    18,395.48x = 25,384.50 × 10,011.80
  4. Step 4: Simplify right side
    18,395.48x = 254,144,410.18
  5. Step 5: Solve for x
    x = 254,144,410.18/18,395.48
  6. Step 6: Final answer
    x = 13,815.59

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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.