Home / 18,269.78-25,212.30-9,886.28

Finding the Fourth Proportional to 18,269.78, 25,212.30 and 9,886.28

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Solution

The fourth proportional to 18,269.78, 25,212.30 and 9,886.28 is: 13,643.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.78 : 25,212.30 = 9,886.28 : x
  2. Step 2: Convert to fraction form
    18,269.78/25,212.30 = 9,886.28/x
  3. Step 3: Cross multiply
    18,269.78x = 25,212.30 × 9,886.28
  4. Step 4: Simplify right side
    18,269.78x = 249,255,857.24
  5. Step 5: Solve for x
    x = 249,255,857.24/18,269.78
  6. Step 6: Final answer
    x = 13,643.07

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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.