Home / 18,345.17-25,308.18-11,970.29

Finding the Fourth Proportional to 18,345.17, 25,308.18 and 11,970.29

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Solution

The fourth proportional to 18,345.17, 25,308.18 and 11,970.29 is: 16,513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.17 : 25,308.18 = 11,970.29 : x
  2. Step 2: Convert to fraction form
    18,345.17/25,308.18 = 11,970.29/x
  3. Step 3: Cross multiply
    18,345.17x = 25,308.18 × 11,970.29
  4. Step 4: Simplify right side
    18,345.17x = 302,946,403.33
  5. Step 5: Solve for x
    x = 302,946,403.33/18,345.17
  6. Step 6: Final answer
    x = 16,513.69

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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.