Home / 10,355.46-14,290.53-5,639.74

Finding the Fourth Proportional to 10,355.46, 14,290.53 and 5,639.74

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Solution

The fourth proportional to 10,355.46, 14,290.53 and 5,639.74 is: 7,782.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.46 : 14,290.53 = 5,639.74 : x
  2. Step 2: Convert to fraction form
    10,355.46/14,290.53 = 5,639.74/x
  3. Step 3: Cross multiply
    10,355.46x = 14,290.53 × 5,639.74
  4. Step 4: Simplify right side
    10,355.46x = 80,594,873.66
  5. Step 5: Solve for x
    x = 80,594,873.66/10,355.46
  6. Step 6: Final answer
    x = 7,782.84

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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.