Home / 18,303.73-25,259.28-9,920.23

Finding the Fourth Proportional to 18,303.73, 25,259.28 and 9,920.23

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Solution

The fourth proportional to 18,303.73, 25,259.28 and 9,920.23 is: 13,689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.73 : 25,259.28 = 9,920.23 : x
  2. Step 2: Convert to fraction form
    18,303.73/25,259.28 = 9,920.23/x
  3. Step 3: Cross multiply
    18,303.73x = 25,259.28 × 9,920.23
  4. Step 4: Simplify right side
    18,303.73x = 250,577,867.23
  5. Step 5: Solve for x
    x = 250,577,867.23/18,303.73
  6. Step 6: Final answer
    x = 13,689.99

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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.