Home / 38,430.50-53,034.90-21,663.50

Finding the Fourth Proportional to 38,430.50, 53,034.90 and 21,663.50

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Solution

The fourth proportional to 38,430.50, 53,034.90 and 21,663.50 is: 29,896.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,430.50 : 53,034.90 = 21,663.50 : x
  2. Step 2: Convert to fraction form
    38,430.50/53,034.90 = 21,663.50/x
  3. Step 3: Cross multiply
    38,430.50x = 53,034.90 × 21,663.50
  4. Step 4: Simplify right side
    38,430.50x = 1,148,921,556.15
  5. Step 5: Solve for x
    x = 1,148,921,556.15/38,430.50
  6. Step 6: Final answer
    x = 29,896.09

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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.