Home / 38,430.36-53,035.38-21,663

Finding the Fourth Proportional to 38,430.36, 53,035.38 and 21,663

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Solution

The fourth proportional to 38,430.36, 53,035.38 and 21,663 is: 29,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,430.36 : 53,035.38 = 21,663 : x
  2. Step 2: Convert to fraction form
    38,430.36/53,035.38 = 21,663/x
  3. Step 3: Cross multiply
    38,430.36x = 53,035.38 × 21,663
  4. Step 4: Simplify right side
    38,430.36x = 1,148,905,436.94
  5. Step 5: Solve for x
    x = 1,148,905,436.94/38,430.36
  6. Step 6: Final answer
    x = 29,895.78

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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.