Home / 13,484.66-20,127.13-12,653.60

Finding the Fourth Proportional to 13,484.66, 20,127.13 and 12,653.60

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Solution

The fourth proportional to 13,484.66, 20,127.13 and 12,653.60 is: 18,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.66 : 20,127.13 = 12,653.60 : x
  2. Step 2: Convert to fraction form
    13,484.66/20,127.13 = 12,653.60/x
  3. Step 3: Cross multiply
    13,484.66x = 20,127.13 × 12,653.60
  4. Step 4: Simplify right side
    13,484.66x = 254,680,652.17
  5. Step 5: Solve for x
    x = 254,680,652.17/13,484.66
  6. Step 6: Final answer
    x = 18,886.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.