Home / 21,357.08-29,466.32-12,402.85

Finding the Fourth Proportional to 21,357.08, 29,466.32 and 12,402.85

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Solution

The fourth proportional to 21,357.08, 29,466.32 and 12,402.85 is: 17,112.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.08 : 29,466.32 = 12,402.85 : x
  2. Step 2: Convert to fraction form
    21,357.08/29,466.32 = 12,402.85/x
  3. Step 3: Cross multiply
    21,357.08x = 29,466.32 × 12,402.85
  4. Step 4: Simplify right side
    21,357.08x = 365,466,461.74
  5. Step 5: Solve for x
    x = 365,466,461.74/21,357.08
  6. Step 6: Final answer
    x = 17,112.19

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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.