Home / 28,243.71-38,975-15,496.60

Finding the Fourth Proportional to 28,243.71, 38,975 and 15,496.60

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Solution

The fourth proportional to 28,243.71, 38,975 and 15,496.60 is: 21,384.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.71 : 38,975 = 15,496.60 : x
  2. Step 2: Convert to fraction form
    28,243.71/38,975 = 15,496.60/x
  3. Step 3: Cross multiply
    28,243.71x = 38,975 × 15,496.60
  4. Step 4: Simplify right side
    28,243.71x = 603,979,985
  5. Step 5: Solve for x
    x = 603,979,985/28,243.71
  6. Step 6: Final answer
    x = 21,384.58

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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.