Home / 13,479.93-18,540.63-10,821.51

Finding the Fourth Proportional to 13,479.93, 18,540.63 and 10,821.51

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Solution

The fourth proportional to 13,479.93, 18,540.63 and 10,821.51 is: 14,884.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.93 : 18,540.63 = 10,821.51 : x
  2. Step 2: Convert to fraction form
    13,479.93/18,540.63 = 10,821.51/x
  3. Step 3: Cross multiply
    13,479.93x = 18,540.63 × 10,821.51
  4. Step 4: Simplify right side
    13,479.93x = 200,637,612.95
  5. Step 5: Solve for x
    x = 200,637,612.95/13,479.93
  6. Step 6: Final answer
    x = 14,884.17

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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.