Home / 25,138.40-37,678.26-18,503.15

Finding the Fourth Proportional to 25,138.40, 37,678.26 and 18,503.15

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Solution

The fourth proportional to 25,138.40, 37,678.26 and 18,503.15 is: 27,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.40 : 37,678.26 = 18,503.15 : x
  2. Step 2: Convert to fraction form
    25,138.40/37,678.26 = 18,503.15/x
  3. Step 3: Cross multiply
    25,138.40x = 37,678.26 × 18,503.15
  4. Step 4: Simplify right side
    25,138.40x = 697,166,496.52
  5. Step 5: Solve for x
    x = 697,166,496.52/25,138.40
  6. Step 6: Final answer
    x = 27,733.13

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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.