Home / 19,005.40-28,518.90-13,166.20

Finding the Fourth Proportional to 19,005.40, 28,518.90 and 13,166.20

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Solution

The fourth proportional to 19,005.40, 28,518.90 and 13,166.20 is: 19,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.40 : 28,518.90 = 13,166.20 : x
  2. Step 2: Convert to fraction form
    19,005.40/28,518.90 = 13,166.20/x
  3. Step 3: Cross multiply
    19,005.40x = 28,518.90 × 13,166.20
  4. Step 4: Simplify right side
    19,005.40x = 375,485,541.18
  5. Step 5: Solve for x
    x = 375,485,541.18/19,005.40
  6. Step 6: Final answer
    x = 19,756.78

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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.