Home / 10,354.50-14,289.24-5,638.80

Finding the Fourth Proportional to 10,354.50, 14,289.24 and 5,638.80

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Solution

The fourth proportional to 10,354.50, 14,289.24 and 5,638.80 is: 7,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,354.50 : 14,289.24 = 5,638.80 : x
  2. Step 2: Convert to fraction form
    10,354.50/14,289.24 = 5,638.80/x
  3. Step 3: Cross multiply
    10,354.50x = 14,289.24 × 5,638.80
  4. Step 4: Simplify right side
    10,354.50x = 80,574,166.51
  5. Step 5: Solve for x
    x = 80,574,166.51/10,354.50
  6. Step 6: Final answer
    x = 7,781.56

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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.