Home / 19,561.88-26,988.32-12,851.16

Finding the Fourth Proportional to 19,561.88, 26,988.32 and 12,851.16

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Solution

The fourth proportional to 19,561.88, 26,988.32 and 12,851.16 is: 17,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,561.88 : 26,988.32 = 12,851.16 : x
  2. Step 2: Convert to fraction form
    19,561.88/26,988.32 = 12,851.16/x
  3. Step 3: Cross multiply
    19,561.88x = 26,988.32 × 12,851.16
  4. Step 4: Simplify right side
    19,561.88x = 346,831,218.45
  5. Step 5: Solve for x
    x = 346,831,218.45/19,561.88
  6. Step 6: Final answer
    x = 17,729.95

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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.