Home / 21,586.02-29,789.77-12,155.62

Finding the Fourth Proportional to 21,586.02, 29,789.77 and 12,155.62

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Solution

The fourth proportional to 21,586.02, 29,789.77 and 12,155.62 is: 16,775.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.02 : 29,789.77 = 12,155.62 : x
  2. Step 2: Convert to fraction form
    21,586.02/29,789.77 = 12,155.62/x
  3. Step 3: Cross multiply
    21,586.02x = 29,789.77 × 12,155.62
  4. Step 4: Simplify right side
    21,586.02x = 362,113,124.01
  5. Step 5: Solve for x
    x = 362,113,124.01/21,586.02
  6. Step 6: Final answer
    x = 16,775.35

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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.