Home / 15,295.86-21,106.56-8,580.09

Finding the Fourth Proportional to 15,295.86, 21,106.56 and 8,580.09

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Solution

The fourth proportional to 15,295.86, 21,106.56 and 8,580.09 is: 11,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.86 : 21,106.56 = 8,580.09 : x
  2. Step 2: Convert to fraction form
    15,295.86/21,106.56 = 8,580.09/x
  3. Step 3: Cross multiply
    15,295.86x = 21,106.56 × 8,580.09
  4. Step 4: Simplify right side
    15,295.86x = 181,096,184.39
  5. Step 5: Solve for x
    x = 181,096,184.39/15,295.86
  6. Step 6: Final answer
    x = 11,839.56

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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.