Home / 39,075.20-53,923.40-21,169.12

Finding the Fourth Proportional to 39,075.20, 53,923.40 and 21,169.12

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Solution

The fourth proportional to 39,075.20, 53,923.40 and 21,169.12 is: 29,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,075.20 : 53,923.40 = 21,169.12 : x
  2. Step 2: Convert to fraction form
    39,075.20/53,923.40 = 21,169.12/x
  3. Step 3: Cross multiply
    39,075.20x = 53,923.40 × 21,169.12
  4. Step 4: Simplify right side
    39,075.20x = 1,141,510,925.41
  5. Step 5: Solve for x
    x = 1,141,510,925.41/39,075.20
  6. Step 6: Final answer
    x = 29,213.18

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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.