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Finding the Fourth Proportional to 15,615.71, 23,427.02 and 7,291.19

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Solution

The fourth proportional to 15,615.71, 23,427.02 and 7,291.19 is: 10,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.71 : 23,427.02 = 7,291.19 : x
  2. Step 2: Convert to fraction form
    15,615.71/23,427.02 = 7,291.19/x
  3. Step 3: Cross multiply
    15,615.71x = 23,427.02 × 7,291.19
  4. Step 4: Simplify right side
    15,615.71x = 170,810,700.36
  5. Step 5: Solve for x
    x = 170,810,700.36/15,615.71
  6. Step 6: Final answer
    x = 10,938.39

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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.