Home / 15,427.89-21,290.45-8,713.19

Finding the Fourth Proportional to 15,427.89, 21,290.45 and 8,713.19

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Solution

The fourth proportional to 15,427.89, 21,290.45 and 8,713.19 is: 12,024.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.89 : 21,290.45 = 8,713.19 : x
  2. Step 2: Convert to fraction form
    15,427.89/21,290.45 = 8,713.19/x
  3. Step 3: Cross multiply
    15,427.89x = 21,290.45 × 8,713.19
  4. Step 4: Simplify right side
    15,427.89x = 185,507,586.02
  5. Step 5: Solve for x
    x = 185,507,586.02/15,427.89
  6. Step 6: Final answer
    x = 12,024.17

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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.