Home / 21,151.08-29,188.48-12,653.56

Finding the Fourth Proportional to 21,151.08, 29,188.48 and 12,653.56

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Solution

The fourth proportional to 21,151.08, 29,188.48 and 12,653.56 is: 17,461.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.08 : 29,188.48 = 12,653.56 : x
  2. Step 2: Convert to fraction form
    21,151.08/29,188.48 = 12,653.56/x
  3. Step 3: Cross multiply
    21,151.08x = 29,188.48 × 12,653.56
  4. Step 4: Simplify right side
    21,151.08x = 369,338,182.99
  5. Step 5: Solve for x
    x = 369,338,182.99/21,151.08
  6. Step 6: Final answer
    x = 17,461.91

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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.