Home / 10,354.74-14,289.63-5,639.03

Finding the Fourth Proportional to 10,354.74, 14,289.63 and 5,639.03

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Solution

The fourth proportional to 10,354.74, 14,289.63 and 5,639.03 is: 7,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,354.74 : 14,289.63 = 5,639.03 : x
  2. Step 2: Convert to fraction form
    10,354.74/14,289.63 = 5,639.03/x
  3. Step 3: Cross multiply
    10,354.74x = 14,289.63 × 5,639.03
  4. Step 4: Simplify right side
    10,354.74x = 80,579,580.81
  5. Step 5: Solve for x
    x = 80,579,580.81/10,354.74
  6. Step 6: Final answer
    x = 7,781.90

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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.