Home / 28,208.22-38,925.80-15,459.10

Finding the Fourth Proportional to 28,208.22, 38,925.80 and 15,459.10

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Solution

The fourth proportional to 28,208.22, 38,925.80 and 15,459.10 is: 21,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.22 : 38,925.80 = 15,459.10 : x
  2. Step 2: Convert to fraction form
    28,208.22/38,925.80 = 15,459.10/x
  3. Step 3: Cross multiply
    28,208.22x = 38,925.80 × 15,459.10
  4. Step 4: Simplify right side
    28,208.22x = 601,757,834.78
  5. Step 5: Solve for x
    x = 601,757,834.78/28,208.22
  6. Step 6: Final answer
    x = 21,332.71

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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.