Home / 13,020.71-19,531.97-6,445.13

Finding the Fourth Proportional to 13,020.71, 19,531.97 and 6,445.13

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Solution

The fourth proportional to 13,020.71, 19,531.97 and 6,445.13 is: 9,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.71 : 19,531.97 = 6,445.13 : x
  2. Step 2: Convert to fraction form
    13,020.71/19,531.97 = 6,445.13/x
  3. Step 3: Cross multiply
    13,020.71x = 19,531.97 × 6,445.13
  4. Step 4: Simplify right side
    13,020.71x = 125,885,980.09
  5. Step 5: Solve for x
    x = 125,885,980.09/13,020.71
  6. Step 6: Final answer
    x = 9,668.14

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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.