Home / 15,415.96-21,274.40-8,701.32

Finding the Fourth Proportional to 15,415.96, 21,274.40 and 8,701.32

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Solution

The fourth proportional to 15,415.96, 21,274.40 and 8,701.32 is: 12,008.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.96 : 21,274.40 = 8,701.32 : x
  2. Step 2: Convert to fraction form
    15,415.96/21,274.40 = 8,701.32/x
  3. Step 3: Cross multiply
    15,415.96x = 21,274.40 × 8,701.32
  4. Step 4: Simplify right side
    15,415.96x = 185,115,362.21
  5. Step 5: Solve for x
    x = 185,115,362.21/15,415.96
  6. Step 6: Final answer
    x = 12,008.03

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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.