Home / 18,216.88-25,139.76-10,259.40

Finding the Fourth Proportional to 18,216.88, 25,139.76 and 10,259.40

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Solution

The fourth proportional to 18,216.88, 25,139.76 and 10,259.40 is: 14,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.88 : 25,139.76 = 10,259.40 : x
  2. Step 2: Convert to fraction form
    18,216.88/25,139.76 = 10,259.40/x
  3. Step 3: Cross multiply
    18,216.88x = 25,139.76 × 10,259.40
  4. Step 4: Simplify right side
    18,216.88x = 257,918,853.74
  5. Step 5: Solve for x
    x = 257,918,853.74/18,216.88
  6. Step 6: Final answer
    x = 14,158.23

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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.