Home / 14,986.64-20,630.76-12,878.48

Finding the Fourth Proportional to 14,986.64, 20,630.76 and 12,878.48

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Solution

The fourth proportional to 14,986.64, 20,630.76 and 12,878.48 is: 17,728.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.64 : 20,630.76 = 12,878.48 : x
  2. Step 2: Convert to fraction form
    14,986.64/20,630.76 = 12,878.48/x
  3. Step 3: Cross multiply
    14,986.64x = 20,630.76 × 12,878.48
  4. Step 4: Simplify right side
    14,986.64x = 265,692,830.04
  5. Step 5: Solve for x
    x = 265,692,830.04/14,986.64
  6. Step 6: Final answer
    x = 17,728.65

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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.