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Finding the Fourth Proportional to 27,651, 38,158.98 and 15,075.80

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Solution

The fourth proportional to 27,651, 38,158.98 and 15,075.80 is: 20,804.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,651 : 38,158.98 = 15,075.80 : x
  2. Step 2: Convert to fraction form
    27,651/38,158.98 = 15,075.80/x
  3. Step 3: Cross multiply
    27,651x = 38,158.98 × 15,075.80
  4. Step 4: Simplify right side
    27,651x = 575,277,150.68
  5. Step 5: Solve for x
    x = 575,277,150.68/27,651
  6. Step 6: Final answer
    x = 20,804.93

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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.