Home / 28,389.76-39,177.48-15,814.60

Finding the Fourth Proportional to 28,389.76, 39,177.48 and 15,814.60

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Solution

The fourth proportional to 28,389.76, 39,177.48 and 15,814.60 is: 21,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.76 : 39,177.48 = 15,814.60 : x
  2. Step 2: Convert to fraction form
    28,389.76/39,177.48 = 15,814.60/x
  3. Step 3: Cross multiply
    28,389.76x = 39,177.48 × 15,814.60
  4. Step 4: Simplify right side
    28,389.76x = 619,576,175.21
  5. Step 5: Solve for x
    x = 619,576,175.21/28,389.76
  6. Step 6: Final answer
    x = 21,823.93

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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.