Home / 28,519.65-39,353.63-15,771.06

Finding the Fourth Proportional to 28,519.65, 39,353.63 and 15,771.06

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Solution

The fourth proportional to 28,519.65, 39,353.63 and 15,771.06 is: 21,762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.65 : 39,353.63 = 15,771.06 : x
  2. Step 2: Convert to fraction form
    28,519.65/39,353.63 = 15,771.06/x
  3. Step 3: Cross multiply
    28,519.65x = 39,353.63 × 15,771.06
  4. Step 4: Simplify right side
    28,519.65x = 620,648,381.09
  5. Step 5: Solve for x
    x = 620,648,381.09/28,519.65
  6. Step 6: Final answer
    x = 21,762.13

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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.