Home / 25,564.95-38,291.94-12,389.63

Finding the Fourth Proportional to 25,564.95, 38,291.94 and 12,389.63

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Solution

The fourth proportional to 25,564.95, 38,291.94 and 12,389.63 is: 18,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,564.95 : 38,291.94 = 12,389.63 : x
  2. Step 2: Convert to fraction form
    25,564.95/38,291.94 = 12,389.63/x
  3. Step 3: Cross multiply
    25,564.95x = 38,291.94 × 12,389.63
  4. Step 4: Simplify right side
    25,564.95x = 474,422,777.12
  5. Step 5: Solve for x
    x = 474,422,777.12/25,564.95
  6. Step 6: Final answer
    x = 18,557.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.