Home / 20,934.12-28,897.74-12,549

Finding the Fourth Proportional to 20,934.12, 28,897.74 and 12,549

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Solution

The fourth proportional to 20,934.12, 28,897.74 and 12,549 is: 17,322.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.12 : 28,897.74 = 12,549 : x
  2. Step 2: Convert to fraction form
    20,934.12/28,897.74 = 12,549/x
  3. Step 3: Cross multiply
    20,934.12x = 28,897.74 × 12,549
  4. Step 4: Simplify right side
    20,934.12x = 362,637,739.26
  5. Step 5: Solve for x
    x = 362,637,739.26/20,934.12
  6. Step 6: Final answer
    x = 17,322.81

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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.