Home / 16,309.40-22,503.90-15,478.96

Finding the Fourth Proportional to 16,309.40, 22,503.90 and 15,478.96

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Solution

The fourth proportional to 16,309.40, 22,503.90 and 15,478.96 is: 21,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,309.40 : 22,503.90 = 15,478.96 : x
  2. Step 2: Convert to fraction form
    16,309.40/22,503.90 = 15,478.96/x
  3. Step 3: Cross multiply
    16,309.40x = 22,503.90 × 15,478.96
  4. Step 4: Simplify right side
    16,309.40x = 348,336,967.94
  5. Step 5: Solve for x
    x = 348,336,967.94/16,309.40
  6. Step 6: Final answer
    x = 21,358.05

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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.