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Finding the Fourth Proportional to 28,700.02, 39,606 and 15,952.80

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Solution

The fourth proportional to 28,700.02, 39,606 and 15,952.80 is: 22,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.02 : 39,606 = 15,952.80 : x
  2. Step 2: Convert to fraction form
    28,700.02/39,606 = 15,952.80/x
  3. Step 3: Cross multiply
    28,700.02x = 39,606 × 15,952.80
  4. Step 4: Simplify right side
    28,700.02x = 631,826,596.80
  5. Step 5: Solve for x
    x = 631,826,596.80/28,700.02
  6. Step 6: Final answer
    x = 22,014.85

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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.