Home / 28,424.24-39,223.28-15,677.90

Finding the Fourth Proportional to 28,424.24, 39,223.28 and 15,677.90

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Solution

The fourth proportional to 28,424.24, 39,223.28 and 15,677.90 is: 21,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.24 : 39,223.28 = 15,677.90 : x
  2. Step 2: Convert to fraction form
    28,424.24/39,223.28 = 15,677.90/x
  3. Step 3: Cross multiply
    28,424.24x = 39,223.28 × 15,677.90
  4. Step 4: Simplify right side
    28,424.24x = 614,938,762.07
  5. Step 5: Solve for x
    x = 614,938,762.07/28,424.24
  6. Step 6: Final answer
    x = 21,634.31

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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.