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Finding the Fourth Proportional to 39,499.15, 54,509.01 and 21,594.15

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Solution

The fourth proportional to 39,499.15, 54,509.01 and 21,594.15 is: 29,800.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,499.15 : 54,509.01 = 21,594.15 : x
  2. Step 2: Convert to fraction form
    39,499.15/54,509.01 = 21,594.15/x
  3. Step 3: Cross multiply
    39,499.15x = 54,509.01 × 21,594.15
  4. Step 4: Simplify right side
    39,499.15x = 1,177,075,792.28
  5. Step 5: Solve for x
    x = 1,177,075,792.28/39,499.15
  6. Step 6: Final answer
    x = 29,800.03

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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.