Home / 13,308.19-19,948.80-8,631.18

Finding the Fourth Proportional to 13,308.19, 19,948.80 and 8,631.18

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Solution

The fourth proportional to 13,308.19, 19,948.80 and 8,631.18 is: 12,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.19 : 19,948.80 = 8,631.18 : x
  2. Step 2: Convert to fraction form
    13,308.19/19,948.80 = 8,631.18/x
  3. Step 3: Cross multiply
    13,308.19x = 19,948.80 × 8,631.18
  4. Step 4: Simplify right side
    13,308.19x = 172,181,683.58
  5. Step 5: Solve for x
    x = 172,181,683.58/13,308.19
  6. Step 6: Final answer
    x = 12,938.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.