Home / 28,666.02-39,557.77-15,920.01

Finding the Fourth Proportional to 28,666.02, 39,557.77 and 15,920.01

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Solution

The fourth proportional to 28,666.02, 39,557.77 and 15,920.01 is: 21,968.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.02 : 39,557.77 = 15,920.01 : x
  2. Step 2: Convert to fraction form
    28,666.02/39,557.77 = 15,920.01/x
  3. Step 3: Cross multiply
    28,666.02x = 39,557.77 × 15,920.01
  4. Step 4: Simplify right side
    28,666.02x = 629,760,093.98
  5. Step 5: Solve for x
    x = 629,760,093.98/28,666.02
  6. Step 6: Final answer
    x = 21,968.87

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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.