Home / 15,120.95-20,852.54-9,070.25

Finding the Fourth Proportional to 15,120.95, 20,852.54 and 9,070.25

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Solution

The fourth proportional to 15,120.95, 20,852.54 and 9,070.25 is: 12,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.95 : 20,852.54 = 9,070.25 : x
  2. Step 2: Convert to fraction form
    15,120.95/20,852.54 = 9,070.25/x
  3. Step 3: Cross multiply
    15,120.95x = 20,852.54 × 9,070.25
  4. Step 4: Simplify right side
    15,120.95x = 189,137,635.33
  5. Step 5: Solve for x
    x = 189,137,635.33/15,120.95
  6. Step 6: Final answer
    x = 12,508.32

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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.