Home / 15,290.61-21,099.80-8,575.32

Finding the Fourth Proportional to 15,290.61, 21,099.80 and 8,575.32

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Solution

The fourth proportional to 15,290.61, 21,099.80 and 8,575.32 is: 11,833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.61 : 21,099.80 = 8,575.32 : x
  2. Step 2: Convert to fraction form
    15,290.61/21,099.80 = 8,575.32/x
  3. Step 3: Cross multiply
    15,290.61x = 21,099.80 × 8,575.32
  4. Step 4: Simplify right side
    15,290.61x = 180,937,494.06
  5. Step 5: Solve for x
    x = 180,937,494.06/15,290.61
  6. Step 6: Final answer
    x = 11,833.24

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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.