Home / 25,407.87-38,135.43-12,937.21

Finding the Fourth Proportional to 25,407.87, 38,135.43 and 12,937.21

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Solution

The fourth proportional to 25,407.87, 38,135.43 and 12,937.21 is: 19,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,407.87 : 38,135.43 = 12,937.21 : x
  2. Step 2: Convert to fraction form
    25,407.87/38,135.43 = 12,937.21/x
  3. Step 3: Cross multiply
    25,407.87x = 38,135.43 × 12,937.21
  4. Step 4: Simplify right side
    25,407.87x = 493,366,066.35
  5. Step 5: Solve for x
    x = 493,366,066.35/25,407.87
  6. Step 6: Final answer
    x = 19,417.84

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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.