Home / 16,200.64-22,211.08-15,905.40

Finding the Fourth Proportional to 16,200.64, 22,211.08 and 15,905.40

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Solution

The fourth proportional to 16,200.64, 22,211.08 and 15,905.40 is: 21,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,200.64 : 22,211.08 = 15,905.40 : x
  2. Step 2: Convert to fraction form
    16,200.64/22,211.08 = 15,905.40/x
  3. Step 3: Cross multiply
    16,200.64x = 22,211.08 × 15,905.40
  4. Step 4: Simplify right side
    16,200.64x = 353,276,111.83
  5. Step 5: Solve for x
    x = 353,276,111.83/16,200.64
  6. Step 6: Final answer
    x = 21,806.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.