Home / 12,750.20-19,125.27-3,390.22

Finding the Fourth Proportional to 12,750.20, 19,125.27 and 3,390.22

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Solution

The fourth proportional to 12,750.20, 19,125.27 and 3,390.22 is: 5,085.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.20 : 19,125.27 = 3,390.22 : x
  2. Step 2: Convert to fraction form
    12,750.20/19,125.27 = 3,390.22/x
  3. Step 3: Cross multiply
    12,750.20x = 19,125.27 × 3,390.22
  4. Step 4: Simplify right side
    12,750.20x = 64,838,852.51
  5. Step 5: Solve for x
    x = 64,838,852.51/12,750.20
  6. Step 6: Final answer
    x = 5,085.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.