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Finding the Fourth Proportional to 18,777.95, 25,913.62 and 10,280.14

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Solution

The fourth proportional to 18,777.95, 25,913.62 and 10,280.14 is: 14,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.95 : 25,913.62 = 10,280.14 : x
  2. Step 2: Convert to fraction form
    18,777.95/25,913.62 = 10,280.14/x
  3. Step 3: Cross multiply
    18,777.95x = 25,913.62 × 10,280.14
  4. Step 4: Simplify right side
    18,777.95x = 266,395,641.51
  5. Step 5: Solve for x
    x = 266,395,641.51/18,777.95
  6. Step 6: Final answer
    x = 14,186.62

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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.