Home / 12,275.29-18,400.33-6,999.51

Finding the Fourth Proportional to 12,275.29, 18,400.33 and 6,999.51

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Solution

The fourth proportional to 12,275.29, 18,400.33 and 6,999.51 is: 10,492.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.29 : 18,400.33 = 6,999.51 : x
  2. Step 2: Convert to fraction form
    12,275.29/18,400.33 = 6,999.51/x
  3. Step 3: Cross multiply
    12,275.29x = 18,400.33 × 6,999.51
  4. Step 4: Simplify right side
    12,275.29x = 128,793,293.84
  5. Step 5: Solve for x
    x = 128,793,293.84/12,275.29
  6. Step 6: Final answer
    x = 10,492.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.