Home / 28,259.56-38,996.64-15,683.56

Finding the Fourth Proportional to 28,259.56, 38,996.64 and 15,683.56

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Solution

The fourth proportional to 28,259.56, 38,996.64 and 15,683.56 is: 21,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.56 : 38,996.64 = 15,683.56 : x
  2. Step 2: Convert to fraction form
    28,259.56/38,996.64 = 15,683.56/x
  3. Step 3: Cross multiply
    28,259.56x = 38,996.64 × 15,683.56
  4. Step 4: Simplify right side
    28,259.56x = 611,606,143.24
  5. Step 5: Solve for x
    x = 611,606,143.24/28,259.56
  6. Step 6: Final answer
    x = 21,642.45

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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.