Home / 28,472.88-39,293.18-15,897.63

Finding the Fourth Proportional to 28,472.88, 39,293.18 and 15,897.63

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Solution

The fourth proportional to 28,472.88, 39,293.18 and 15,897.63 is: 21,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.88 : 39,293.18 = 15,897.63 : x
  2. Step 2: Convert to fraction form
    28,472.88/39,293.18 = 15,897.63/x
  3. Step 3: Cross multiply
    28,472.88x = 39,293.18 × 15,897.63
  4. Step 4: Simplify right side
    28,472.88x = 624,668,437.16
  5. Step 5: Solve for x
    x = 624,668,437.16/28,472.88
  6. Step 6: Final answer
    x = 21,939.07

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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.