Home / 21,032.88-28,985.49-15,054.14

Finding the Fourth Proportional to 21,032.88, 28,985.49 and 15,054.14

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Solution

The fourth proportional to 21,032.88, 28,985.49 and 15,054.14 is: 20,746.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.88 : 28,985.49 = 15,054.14 : x
  2. Step 2: Convert to fraction form
    21,032.88/28,985.49 = 15,054.14/x
  3. Step 3: Cross multiply
    21,032.88x = 28,985.49 × 15,054.14
  4. Step 4: Simplify right side
    21,032.88x = 436,351,479.50
  5. Step 5: Solve for x
    x = 436,351,479.50/21,032.88
  6. Step 6: Final answer
    x = 20,746.16

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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.