Home / 38,433.78-53,038.56-21,666.78

Finding the Fourth Proportional to 38,433.78, 53,038.56 and 21,666.78

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Solution

The fourth proportional to 38,433.78, 53,038.56 and 21,666.78 is: 29,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,433.78 : 53,038.56 = 21,666.78 : x
  2. Step 2: Convert to fraction form
    38,433.78/53,038.56 = 21,666.78/x
  3. Step 3: Cross multiply
    38,433.78x = 53,038.56 × 21,666.78
  4. Step 4: Simplify right side
    38,433.78x = 1,149,174,811.04
  5. Step 5: Solve for x
    x = 1,149,174,811.04/38,433.78
  6. Step 6: Final answer
    x = 29,900.12

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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.