Home / 21,430.48-32,123.04-9,751.90

Finding the Fourth Proportional to 21,430.48, 32,123.04 and 9,751.90

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Solution

The fourth proportional to 21,430.48, 32,123.04 and 9,751.90 is: 14,617.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.48 : 32,123.04 = 9,751.90 : x
  2. Step 2: Convert to fraction form
    21,430.48/32,123.04 = 9,751.90/x
  3. Step 3: Cross multiply
    21,430.48x = 32,123.04 × 9,751.90
  4. Step 4: Simplify right side
    21,430.48x = 313,260,673.78
  5. Step 5: Solve for x
    x = 313,260,673.78/21,430.48
  6. Step 6: Final answer
    x = 14,617.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.