Home / 18,270.13-25,212.80-9,886.63

Finding the Fourth Proportional to 18,270.13, 25,212.80 and 9,886.63

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Solution

The fourth proportional to 18,270.13, 25,212.80 and 9,886.63 is: 13,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.13 : 25,212.80 = 9,886.63 : x
  2. Step 2: Convert to fraction form
    18,270.13/25,212.80 = 9,886.63/x
  3. Step 3: Cross multiply
    18,270.13x = 25,212.80 × 9,886.63
  4. Step 4: Simplify right side
    18,270.13x = 249,269,449.37
  5. Step 5: Solve for x
    x = 249,269,449.37/18,270.13
  6. Step 6: Final answer
    x = 13,643.55

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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.