Home / 15,109.93-20,848.35-9,141.49

Finding the Fourth Proportional to 15,109.93, 20,848.35 and 9,141.49

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Solution

The fourth proportional to 15,109.93, 20,848.35 and 9,141.49 is: 12,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.93 : 20,848.35 = 9,141.49 : x
  2. Step 2: Convert to fraction form
    15,109.93/20,848.35 = 9,141.49/x
  3. Step 3: Cross multiply
    15,109.93x = 20,848.35 × 9,141.49
  4. Step 4: Simplify right side
    15,109.93x = 190,584,983.04
  5. Step 5: Solve for x
    x = 190,584,983.04/15,109.93
  6. Step 6: Final answer
    x = 12,613.23

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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.