Home / 21,345.08-29,445.76-13,797.88

Finding the Fourth Proportional to 21,345.08, 29,445.76 and 13,797.88

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Solution

The fourth proportional to 21,345.08, 29,445.76 and 13,797.88 is: 19,034.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.08 : 29,445.76 = 13,797.88 : x
  2. Step 2: Convert to fraction form
    21,345.08/29,445.76 = 13,797.88/x
  3. Step 3: Cross multiply
    21,345.08x = 29,445.76 × 13,797.88
  4. Step 4: Simplify right side
    21,345.08x = 406,289,062.99
  5. Step 5: Solve for x
    x = 406,289,062.99/21,345.08
  6. Step 6: Final answer
    x = 19,034.32

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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.