Home / 28,611.36-39,483.18-15,690.60

Finding the Fourth Proportional to 28,611.36, 39,483.18 and 15,690.60

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Solution

The fourth proportional to 28,611.36, 39,483.18 and 15,690.60 is: 21,652.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.36 : 39,483.18 = 15,690.60 : x
  2. Step 2: Convert to fraction form
    28,611.36/39,483.18 = 15,690.60/x
  3. Step 3: Cross multiply
    28,611.36x = 39,483.18 × 15,690.60
  4. Step 4: Simplify right side
    28,611.36x = 619,514,784.11
  5. Step 5: Solve for x
    x = 619,514,784.11/28,611.36
  6. Step 6: Final answer
    x = 21,652.76

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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.