Home / 13,547.27-18,695.93-8,171.39

Finding the Fourth Proportional to 13,547.27, 18,695.93 and 8,171.39

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Solution

The fourth proportional to 13,547.27, 18,695.93 and 8,171.39 is: 11,276.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.27 : 18,695.93 = 8,171.39 : x
  2. Step 2: Convert to fraction form
    13,547.27/18,695.93 = 8,171.39/x
  3. Step 3: Cross multiply
    13,547.27x = 18,695.93 × 8,171.39
  4. Step 4: Simplify right side
    13,547.27x = 152,771,601.11
  5. Step 5: Solve for x
    x = 152,771,601.11/13,547.27
  6. Step 6: Final answer
    x = 11,276.93

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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.