Home / 15,290.36-21,099.45-8,575.08

Finding the Fourth Proportional to 15,290.36, 21,099.45 and 8,575.08

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Solution

The fourth proportional to 15,290.36, 21,099.45 and 8,575.08 is: 11,832.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.36 : 21,099.45 = 8,575.08 : x
  2. Step 2: Convert to fraction form
    15,290.36/21,099.45 = 8,575.08/x
  3. Step 3: Cross multiply
    15,290.36x = 21,099.45 × 8,575.08
  4. Step 4: Simplify right side
    15,290.36x = 180,929,471.71
  5. Step 5: Solve for x
    x = 180,929,471.71/15,290.36
  6. Step 6: Final answer
    x = 11,832.91

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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.