Home / 20,417.69-28,177.16-11,925.24

Finding the Fourth Proportional to 20,417.69, 28,177.16 and 11,925.24

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Solution

The fourth proportional to 20,417.69, 28,177.16 and 11,925.24 is: 16,457.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.69 : 28,177.16 = 11,925.24 : x
  2. Step 2: Convert to fraction form
    20,417.69/28,177.16 = 11,925.24/x
  3. Step 3: Cross multiply
    20,417.69x = 28,177.16 × 11,925.24
  4. Step 4: Simplify right side
    20,417.69x = 336,019,335.89
  5. Step 5: Solve for x
    x = 336,019,335.89/20,417.69
  6. Step 6: Final answer
    x = 16,457.27

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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.