Home / 18,339.21-25,304.21-10,782.78

Finding the Fourth Proportional to 18,339.21, 25,304.21 and 10,782.78

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Solution

The fourth proportional to 18,339.21, 25,304.21 and 10,782.78 is: 14,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.21 : 25,304.21 = 10,782.78 : x
  2. Step 2: Convert to fraction form
    18,339.21/25,304.21 = 10,782.78/x
  3. Step 3: Cross multiply
    18,339.21x = 25,304.21 × 10,782.78
  4. Step 4: Simplify right side
    18,339.21x = 272,849,729.50
  5. Step 5: Solve for x
    x = 272,849,729.50/18,339.21
  6. Step 6: Final answer
    x = 14,877.94

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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.