Home / 28,061.29-38,723.56-15,485.77

Finding the Fourth Proportional to 28,061.29, 38,723.56 and 15,485.77

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Solution

The fourth proportional to 28,061.29, 38,723.56 and 15,485.77 is: 21,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.29 : 38,723.56 = 15,485.77 : x
  2. Step 2: Convert to fraction form
    28,061.29/38,723.56 = 15,485.77/x
  3. Step 3: Cross multiply
    28,061.29x = 38,723.56 × 15,485.77
  4. Step 4: Simplify right side
    28,061.29x = 599,664,143.74
  5. Step 5: Solve for x
    x = 599,664,143.74/28,061.29
  6. Step 6: Final answer
    x = 21,369.80

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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.