Home / 15,890.92-21,938.28-14,208.28

Finding the Fourth Proportional to 15,890.92, 21,938.28 and 14,208.28

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Solution

The fourth proportional to 15,890.92, 21,938.28 and 14,208.28 is: 19,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.92 : 21,938.28 = 14,208.28 : x
  2. Step 2: Convert to fraction form
    15,890.92/21,938.28 = 14,208.28/x
  3. Step 3: Cross multiply
    15,890.92x = 21,938.28 × 14,208.28
  4. Step 4: Simplify right side
    15,890.92x = 311,705,224.96
  5. Step 5: Solve for x
    x = 311,705,224.96/15,890.92
  6. Step 6: Final answer
    x = 19,615.30

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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.