Home / 20,417.13-28,180.44-12,038.49

Finding the Fourth Proportional to 20,417.13, 28,180.44 and 12,038.49

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Solution

The fourth proportional to 20,417.13, 28,180.44 and 12,038.49 is: 16,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.13 : 28,180.44 = 12,038.49 : x
  2. Step 2: Convert to fraction form
    20,417.13/28,180.44 = 12,038.49/x
  3. Step 3: Cross multiply
    20,417.13x = 28,180.44 × 12,038.49
  4. Step 4: Simplify right side
    20,417.13x = 339,249,945.14
  5. Step 5: Solve for x
    x = 339,249,945.14/20,417.13
  6. Step 6: Final answer
    x = 16,615.95

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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.