Home / 10,355.22-14,289.84-5,639.40

Finding the Fourth Proportional to 10,355.22, 14,289.84 and 5,639.40

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Solution

The fourth proportional to 10,355.22, 14,289.84 and 5,639.40 is: 7,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.22 : 14,289.84 = 5,639.40 : x
  2. Step 2: Convert to fraction form
    10,355.22/14,289.84 = 5,639.40/x
  3. Step 3: Cross multiply
    10,355.22x = 14,289.84 × 5,639.40
  4. Step 4: Simplify right side
    10,355.22x = 80,586,123.70
  5. Step 5: Solve for x
    x = 80,586,123.70/10,355.22
  6. Step 6: Final answer
    x = 7,782.17

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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.