Home / 20,842.93-28,763.95-11,411.69

Finding the Fourth Proportional to 20,842.93, 28,763.95 and 11,411.69

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Solution

The fourth proportional to 20,842.93, 28,763.95 and 11,411.69 is: 15,748.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.93 : 28,763.95 = 11,411.69 : x
  2. Step 2: Convert to fraction form
    20,842.93/28,763.95 = 11,411.69/x
  3. Step 3: Cross multiply
    20,842.93x = 28,763.95 × 11,411.69
  4. Step 4: Simplify right side
    20,842.93x = 328,245,223.52
  5. Step 5: Solve for x
    x = 328,245,223.52/20,842.93
  6. Step 6: Final answer
    x = 15,748.52

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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.