Home / 19,115.74-26,378.80-10,618.40

Finding the Fourth Proportional to 19,115.74, 26,378.80 and 10,618.40

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Solution

The fourth proportional to 19,115.74, 26,378.80 and 10,618.40 is: 14,652.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.74 : 26,378.80 = 10,618.40 : x
  2. Step 2: Convert to fraction form
    19,115.74/26,378.80 = 10,618.40/x
  3. Step 3: Cross multiply
    19,115.74x = 26,378.80 × 10,618.40
  4. Step 4: Simplify right side
    19,115.74x = 280,100,649.92
  5. Step 5: Solve for x
    x = 280,100,649.92/19,115.74
  6. Step 6: Final answer
    x = 14,652.88

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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.