Home / 15,070.77-20,797.31-8,356.32

Finding the Fourth Proportional to 15,070.77, 20,797.31 and 8,356.32

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Solution

The fourth proportional to 15,070.77, 20,797.31 and 8,356.32 is: 11,531.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.77 : 20,797.31 = 8,356.32 : x
  2. Step 2: Convert to fraction form
    15,070.77/20,797.31 = 8,356.32/x
  3. Step 3: Cross multiply
    15,070.77x = 20,797.31 × 8,356.32
  4. Step 4: Simplify right side
    15,070.77x = 173,788,935.72
  5. Step 5: Solve for x
    x = 173,788,935.72/15,070.77
  6. Step 6: Final answer
    x = 11,531.52

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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.