Home / 21,010.70-31,518.36-8,528.92

Finding the Fourth Proportional to 21,010.70, 31,518.36 and 8,528.92

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Solution

The fourth proportional to 21,010.70, 31,518.36 and 8,528.92 is: 12,794.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.70 : 31,518.36 = 8,528.92 : x
  2. Step 2: Convert to fraction form
    21,010.70/31,518.36 = 8,528.92/x
  3. Step 3: Cross multiply
    21,010.70x = 31,518.36 × 8,528.92
  4. Step 4: Simplify right side
    21,010.70x = 268,817,570.97
  5. Step 5: Solve for x
    x = 268,817,570.97/21,010.70
  6. Step 6: Final answer
    x = 12,794.32

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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.