Home / 25,420.91-38,113.58-18,309.74

Finding the Fourth Proportional to 25,420.91, 38,113.58 and 18,309.74

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Solution

The fourth proportional to 25,420.91, 38,113.58 and 18,309.74 is: 27,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.91 : 38,113.58 = 18,309.74 : x
  2. Step 2: Convert to fraction form
    25,420.91/38,113.58 = 18,309.74/x
  3. Step 3: Cross multiply
    25,420.91x = 38,113.58 × 18,309.74
  4. Step 4: Simplify right side
    25,420.91x = 697,849,648.72
  5. Step 5: Solve for x
    x = 697,849,648.72/25,420.91
  6. Step 6: Final answer
    x = 27,451.80

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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.