Home / 20,575.49-28,402.04-12,628.51

Finding the Fourth Proportional to 20,575.49, 28,402.04 and 12,628.51

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Solution

The fourth proportional to 20,575.49, 28,402.04 and 12,628.51 is: 17,432.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.49 : 28,402.04 = 12,628.51 : x
  2. Step 2: Convert to fraction form
    20,575.49/28,402.04 = 12,628.51/x
  3. Step 3: Cross multiply
    20,575.49x = 28,402.04 × 12,628.51
  4. Step 4: Simplify right side
    20,575.49x = 358,675,406.73
  5. Step 5: Solve for x
    x = 358,675,406.73/20,575.49
  6. Step 6: Final answer
    x = 17,432.17

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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.