Home / 15,295.86-21,107.04-8,580.58

Finding the Fourth Proportional to 15,295.86, 21,107.04 and 8,580.58

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Solution

The fourth proportional to 15,295.86, 21,107.04 and 8,580.58 is: 11,840.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.86 : 21,107.04 = 8,580.58 : x
  2. Step 2: Convert to fraction form
    15,295.86/21,107.04 = 8,580.58/x
  3. Step 3: Cross multiply
    15,295.86x = 21,107.04 × 8,580.58
  4. Step 4: Simplify right side
    15,295.86x = 181,110,645.28
  5. Step 5: Solve for x
    x = 181,110,645.28/15,295.86
  6. Step 6: Final answer
    x = 11,840.50

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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.