Home / 21,648.16-29,875.80-12,217.60

Finding the Fourth Proportional to 21,648.16, 29,875.80 and 12,217.60

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Solution

The fourth proportional to 21,648.16, 29,875.80 and 12,217.60 is: 16,861.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.16 : 29,875.80 = 12,217.60 : x
  2. Step 2: Convert to fraction form
    21,648.16/29,875.80 = 12,217.60/x
  3. Step 3: Cross multiply
    21,648.16x = 29,875.80 × 12,217.60
  4. Step 4: Simplify right side
    21,648.16x = 365,010,574.08
  5. Step 5: Solve for x
    x = 365,010,574.08/21,648.16
  6. Step 6: Final answer
    x = 16,861.04

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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.