Home / 28,133.68-38,824.14-15,558.16

Finding the Fourth Proportional to 28,133.68, 38,824.14 and 15,558.16

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Solution

The fourth proportional to 28,133.68, 38,824.14 and 15,558.16 is: 21,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.68 : 38,824.14 = 15,558.16 : x
  2. Step 2: Convert to fraction form
    28,133.68/38,824.14 = 15,558.16/x
  3. Step 3: Cross multiply
    28,133.68x = 38,824.14 × 15,558.16
  4. Step 4: Simplify right side
    28,133.68x = 604,032,181.98
  5. Step 5: Solve for x
    x = 604,032,181.98/28,133.68
  6. Step 6: Final answer
    x = 21,470.07

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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.