Home / 25,390.99-35,039.01-14,780.40

Finding the Fourth Proportional to 25,390.99, 35,039.01 and 14,780.40

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Solution

The fourth proportional to 25,390.99, 35,039.01 and 14,780.40 is: 20,396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.99 : 35,039.01 = 14,780.40 : x
  2. Step 2: Convert to fraction form
    25,390.99/35,039.01 = 14,780.40/x
  3. Step 3: Cross multiply
    25,390.99x = 35,039.01 × 14,780.40
  4. Step 4: Simplify right side
    25,390.99x = 517,890,583.40
  5. Step 5: Solve for x
    x = 517,890,583.40/25,390.99
  6. Step 6: Final answer
    x = 20,396.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.