Home / 20,774.06-28,681.96-12,827.96

Finding the Fourth Proportional to 20,774.06, 28,681.96 and 12,827.96

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Solution

The fourth proportional to 20,774.06, 28,681.96 and 12,827.96 is: 17,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.06 : 28,681.96 = 12,827.96 : x
  2. Step 2: Convert to fraction form
    20,774.06/28,681.96 = 12,827.96/x
  3. Step 3: Cross multiply
    20,774.06x = 28,681.96 × 12,827.96
  4. Step 4: Simplify right side
    20,774.06x = 367,931,035.60
  5. Step 5: Solve for x
    x = 367,931,035.60/20,774.06
  6. Step 6: Final answer
    x = 17,711.08

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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.