Home / 28,075.23-38,743.71-15,499.89

Finding the Fourth Proportional to 28,075.23, 38,743.71 and 15,499.89

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Solution

The fourth proportional to 28,075.23, 38,743.71 and 15,499.89 is: 21,389.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.23 : 38,743.71 = 15,499.89 : x
  2. Step 2: Convert to fraction form
    28,075.23/38,743.71 = 15,499.89/x
  3. Step 3: Cross multiply
    28,075.23x = 38,743.71 × 15,499.89
  4. Step 4: Simplify right side
    28,075.23x = 600,523,243.19
  5. Step 5: Solve for x
    x = 600,523,243.19/28,075.23
  6. Step 6: Final answer
    x = 21,389.79

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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.