Home / 28,075.08-38,743.90-15,499.80

Finding the Fourth Proportional to 28,075.08, 38,743.90 and 15,499.80

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Solution

The fourth proportional to 28,075.08, 38,743.90 and 15,499.80 is: 21,389.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.08 : 38,743.90 = 15,499.80 : x
  2. Step 2: Convert to fraction form
    28,075.08/38,743.90 = 15,499.80/x
  3. Step 3: Cross multiply
    28,075.08x = 38,743.90 × 15,499.80
  4. Step 4: Simplify right side
    28,075.08x = 600,522,701.22
  5. Step 5: Solve for x
    x = 600,522,701.22/28,075.08
  6. Step 6: Final answer
    x = 21,389.88

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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.