Home / 18,274.16-25,218.40-9,890.66

Finding the Fourth Proportional to 18,274.16, 25,218.40 and 9,890.66

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Solution

The fourth proportional to 18,274.16, 25,218.40 and 9,890.66 is: 13,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.16 : 25,218.40 = 9,890.66 : x
  2. Step 2: Convert to fraction form
    18,274.16/25,218.40 = 9,890.66/x
  3. Step 3: Cross multiply
    18,274.16x = 25,218.40 × 9,890.66
  4. Step 4: Simplify right side
    18,274.16x = 249,426,620.14
  5. Step 5: Solve for x
    x = 249,426,620.14/18,274.16
  6. Step 6: Final answer
    x = 13,649.14

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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.