Home / 20,347.84-28,076.52-12,798.64

Finding the Fourth Proportional to 20,347.84, 28,076.52 and 12,798.64

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Solution

The fourth proportional to 20,347.84, 28,076.52 and 12,798.64 is: 17,659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.84 : 28,076.52 = 12,798.64 : x
  2. Step 2: Convert to fraction form
    20,347.84/28,076.52 = 12,798.64/x
  3. Step 3: Cross multiply
    20,347.84x = 28,076.52 × 12,798.64
  4. Step 4: Simplify right side
    20,347.84x = 359,341,271.93
  5. Step 5: Solve for x
    x = 359,341,271.93/20,347.84
  6. Step 6: Final answer
    x = 17,659.92

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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.