Home / 25,448.81-38,176.85-7,920.41

Finding the Fourth Proportional to 25,448.81, 38,176.85 and 7,920.41

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Solution

The fourth proportional to 25,448.81, 38,176.85 and 7,920.41 is: 11,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,448.81 : 38,176.85 = 7,920.41 : x
  2. Step 2: Convert to fraction form
    25,448.81/38,176.85 = 7,920.41/x
  3. Step 3: Cross multiply
    25,448.81x = 38,176.85 × 7,920.41
  4. Step 4: Simplify right side
    25,448.81x = 302,376,133.43
  5. Step 5: Solve for x
    x = 302,376,133.43/25,448.81
  6. Step 6: Final answer
    x = 11,881.74

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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.