Home / 15,220.96-21,064.08-14,961.76

Finding the Fourth Proportional to 15,220.96, 21,064.08 and 14,961.76

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Solution

The fourth proportional to 15,220.96, 21,064.08 and 14,961.76 is: 20,705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.96 : 21,064.08 = 14,961.76 : x
  2. Step 2: Convert to fraction form
    15,220.96/21,064.08 = 14,961.76/x
  3. Step 3: Cross multiply
    15,220.96x = 21,064.08 × 14,961.76
  4. Step 4: Simplify right side
    15,220.96x = 315,155,709.58
  5. Step 5: Solve for x
    x = 315,155,709.58/15,220.96
  6. Step 6: Final answer
    x = 20,705.38

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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.