Home / 15,570.14-21,486.67-8,855.76

Finding the Fourth Proportional to 15,570.14, 21,486.67 and 8,855.76

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Solution

The fourth proportional to 15,570.14, 21,486.67 and 8,855.76 is: 12,220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,570.14 : 21,486.67 = 8,855.76 : x
  2. Step 2: Convert to fraction form
    15,570.14/21,486.67 = 8,855.76/x
  3. Step 3: Cross multiply
    15,570.14x = 21,486.67 × 8,855.76
  4. Step 4: Simplify right side
    15,570.14x = 190,280,792.72
  5. Step 5: Solve for x
    x = 190,280,792.72/15,570.14
  6. Step 6: Final answer
    x = 12,220.88

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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.