Home / 15,577.79-21,486.29-9,611.39

Finding the Fourth Proportional to 15,577.79, 21,486.29 and 9,611.39

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Solution

The fourth proportional to 15,577.79, 21,486.29 and 9,611.39 is: 13,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,577.79 : 21,486.29 = 9,611.39 : x
  2. Step 2: Convert to fraction form
    15,577.79/21,486.29 = 9,611.39/x
  3. Step 3: Cross multiply
    15,577.79x = 21,486.29 × 9,611.39
  4. Step 4: Simplify right side
    15,577.79x = 206,513,118.50
  5. Step 5: Solve for x
    x = 206,513,118.50/15,577.79
  6. Step 6: Final answer
    x = 13,256.90

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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.