Home / 28,228.47-38,955.28-15,653.22

Finding the Fourth Proportional to 28,228.47, 38,955.28 and 15,653.22

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Solution

The fourth proportional to 28,228.47, 38,955.28 and 15,653.22 is: 21,601.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.47 : 38,955.28 = 15,653.22 : x
  2. Step 2: Convert to fraction form
    28,228.47/38,955.28 = 15,653.22/x
  3. Step 3: Cross multiply
    28,228.47x = 38,955.28 × 15,653.22
  4. Step 4: Simplify right side
    28,228.47x = 609,775,480.62
  5. Step 5: Solve for x
    x = 609,775,480.62/28,228.47
  6. Step 6: Final answer
    x = 21,601.44

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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.