Home / 28,386.24-39,173.39-15,810.99

Finding the Fourth Proportional to 28,386.24, 39,173.39 and 15,810.99

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Solution

The fourth proportional to 28,386.24, 39,173.39 and 15,810.99 is: 21,819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.24 : 39,173.39 = 15,810.99 : x
  2. Step 2: Convert to fraction form
    28,386.24/39,173.39 = 15,810.99/x
  3. Step 3: Cross multiply
    28,386.24x = 39,173.39 × 15,810.99
  4. Step 4: Simplify right side
    28,386.24x = 619,370,077.56
  5. Step 5: Solve for x
    x = 619,370,077.56/28,386.24
  6. Step 6: Final answer
    x = 21,819.38

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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.