Home / 25,619.10-38,428.65-13,809.30

Finding the Fourth Proportional to 25,619.10, 38,428.65 and 13,809.30

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Solution

The fourth proportional to 25,619.10, 38,428.65 and 13,809.30 is: 20,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,619.10 : 38,428.65 = 13,809.30 : x
  2. Step 2: Convert to fraction form
    25,619.10/38,428.65 = 13,809.30/x
  3. Step 3: Cross multiply
    25,619.10x = 38,428.65 × 13,809.30
  4. Step 4: Simplify right side
    25,619.10x = 530,672,756.45
  5. Step 5: Solve for x
    x = 530,672,756.45/25,619.10
  6. Step 6: Final answer
    x = 20,713.95

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1.5x scale

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.