Home / 15,143.75-20,881.59-10,364.44

Finding the Fourth Proportional to 15,143.75, 20,881.59 and 10,364.44

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Solution

The fourth proportional to 15,143.75, 20,881.59 and 10,364.44 is: 14,291.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.75 : 20,881.59 = 10,364.44 : x
  2. Step 2: Convert to fraction form
    15,143.75/20,881.59 = 10,364.44/x
  3. Step 3: Cross multiply
    15,143.75x = 20,881.59 × 10,364.44
  4. Step 4: Simplify right side
    15,143.75x = 216,425,973.89
  5. Step 5: Solve for x
    x = 216,425,973.89/15,143.75
  6. Step 6: Final answer
    x = 14,291.44

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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.