Home / 10,055.32-13,875.66-5,578.90

Finding the Fourth Proportional to 10,055.32, 13,875.66 and 5,578.90

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Solution

The fourth proportional to 10,055.32, 13,875.66 and 5,578.90 is: 7,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,055.32 : 13,875.66 = 5,578.90 : x
  2. Step 2: Convert to fraction form
    10,055.32/13,875.66 = 5,578.90/x
  3. Step 3: Cross multiply
    10,055.32x = 13,875.66 × 5,578.90
  4. Step 4: Simplify right side
    10,055.32x = 77,410,919.57
  5. Step 5: Solve for x
    x = 77,410,919.57/10,055.32
  6. Step 6: Final answer
    x = 7,698.50

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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.