Home / 15,578.56-21,495.44-9,291.52

Finding the Fourth Proportional to 15,578.56, 21,495.44 and 9,291.52

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Solution

The fourth proportional to 15,578.56, 21,495.44 and 9,291.52 is: 12,820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.56 : 21,495.44 = 9,291.52 : x
  2. Step 2: Convert to fraction form
    15,578.56/21,495.44 = 9,291.52/x
  3. Step 3: Cross multiply
    15,578.56x = 21,495.44 × 9,291.52
  4. Step 4: Simplify right side
    15,578.56x = 199,725,310.67
  5. Step 5: Solve for x
    x = 199,725,310.67/15,578.56
  6. Step 6: Final answer
    x = 12,820.52

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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.