Home / 21,319.71-31,977.42-6,528.74

Finding the Fourth Proportional to 21,319.71, 31,977.42 and 6,528.74

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Solution

The fourth proportional to 21,319.71, 31,977.42 and 6,528.74 is: 9,792.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.71 : 31,977.42 = 6,528.74 : x
  2. Step 2: Convert to fraction form
    21,319.71/31,977.42 = 6,528.74/x
  3. Step 3: Cross multiply
    21,319.71x = 31,977.42 × 6,528.74
  4. Step 4: Simplify right side
    21,319.71x = 208,772,076.68
  5. Step 5: Solve for x
    x = 208,772,076.68/21,319.71
  6. Step 6: Final answer
    x = 9,792.45

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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.