Home / 38,526.78-53,161.52-21,529.70

Finding the Fourth Proportional to 38,526.78, 53,161.52 and 21,529.70

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Solution

The fourth proportional to 38,526.78, 53,161.52 and 21,529.70 is: 29,707.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,526.78 : 53,161.52 = 21,529.70 : x
  2. Step 2: Convert to fraction form
    38,526.78/53,161.52 = 21,529.70/x
  3. Step 3: Cross multiply
    38,526.78x = 53,161.52 × 21,529.70
  4. Step 4: Simplify right side
    38,526.78x = 1,144,551,203.69
  5. Step 5: Solve for x
    x = 1,144,551,203.69/38,526.78
  6. Step 6: Final answer
    x = 29,707.94

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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.