Home / 28,424.47-39,223.58-15,678.13

Finding the Fourth Proportional to 28,424.47, 39,223.58 and 15,678.13

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Solution

The fourth proportional to 28,424.47, 39,223.58 and 15,678.13 is: 21,634.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.47 : 39,223.58 = 15,678.13 : x
  2. Step 2: Convert to fraction form
    28,424.47/39,223.58 = 15,678.13/x
  3. Step 3: Cross multiply
    28,424.47x = 39,223.58 × 15,678.13
  4. Step 4: Simplify right side
    28,424.47x = 614,952,386.31
  5. Step 5: Solve for x
    x = 614,952,386.31/28,424.47
  6. Step 6: Final answer
    x = 21,634.61

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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.