Home / 21,420.90-32,123.36-7,376.96

Finding the Fourth Proportional to 21,420.90, 32,123.36 and 7,376.96

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Solution

The fourth proportional to 21,420.90, 32,123.36 and 7,376.96 is: 11,062.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.90 : 32,123.36 = 7,376.96 : x
  2. Step 2: Convert to fraction form
    21,420.90/32,123.36 = 7,376.96/x
  3. Step 3: Cross multiply
    21,420.90x = 32,123.36 × 7,376.96
  4. Step 4: Simplify right side
    21,420.90x = 236,972,741.79
  5. Step 5: Solve for x
    x = 236,972,741.79/21,420.90
  6. Step 6: Final answer
    x = 11,062.69

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1.5x scale

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.