Home / 21,319.98-31,980.05-6,528.84

Finding the Fourth Proportional to 21,319.98, 31,980.05 and 6,528.84

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Solution

The fourth proportional to 21,319.98, 31,980.05 and 6,528.84 is: 9,793.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.98 : 31,980.05 = 6,528.84 : x
  2. Step 2: Convert to fraction form
    21,319.98/31,980.05 = 6,528.84/x
  3. Step 3: Cross multiply
    21,319.98x = 31,980.05 × 6,528.84
  4. Step 4: Simplify right side
    21,319.98x = 208,792,629.64
  5. Step 5: Solve for x
    x = 208,792,629.64/21,319.98
  6. Step 6: Final answer
    x = 9,793.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.