Home / 15,415.92-21,317.40-14,718.96

Finding the Fourth Proportional to 15,415.92, 21,317.40 and 14,718.96

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Solution

The fourth proportional to 15,415.92, 21,317.40 and 14,718.96 is: 20,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.92 : 21,317.40 = 14,718.96 : x
  2. Step 2: Convert to fraction form
    15,415.92/21,317.40 = 14,718.96/x
  3. Step 3: Cross multiply
    15,415.92x = 21,317.40 × 14,718.96
  4. Step 4: Simplify right side
    15,415.92x = 313,769,957.90
  5. Step 5: Solve for x
    x = 313,769,957.90/15,415.92
  6. Step 6: Final answer
    x = 20,353.63

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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.