Home / 25,421.66-38,109.81-12,934.70

Finding the Fourth Proportional to 25,421.66, 38,109.81 and 12,934.70

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Solution

The fourth proportional to 25,421.66, 38,109.81 and 12,934.70 is: 19,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.66 : 38,109.81 = 12,934.70 : x
  2. Step 2: Convert to fraction form
    25,421.66/38,109.81 = 12,934.70/x
  3. Step 3: Cross multiply
    25,421.66x = 38,109.81 × 12,934.70
  4. Step 4: Simplify right side
    25,421.66x = 492,938,959.41
  5. Step 5: Solve for x
    x = 492,938,959.41/25,421.66
  6. Step 6: Final answer
    x = 19,390.51

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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.