Home / 25,964.81-38,959.40-13,478.05

Finding the Fourth Proportional to 25,964.81, 38,959.40 and 13,478.05

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Solution

The fourth proportional to 25,964.81, 38,959.40 and 13,478.05 is: 20,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,964.81 : 38,959.40 = 13,478.05 : x
  2. Step 2: Convert to fraction form
    25,964.81/38,959.40 = 13,478.05/x
  3. Step 3: Cross multiply
    25,964.81x = 38,959.40 × 13,478.05
  4. Step 4: Simplify right side
    25,964.81x = 525,096,741.17
  5. Step 5: Solve for x
    x = 525,096,741.17/25,964.81
  6. Step 6: Final answer
    x = 20,223.40

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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.