Home / 21,538.01-29,718.10-12,583.79

Finding the Fourth Proportional to 21,538.01, 29,718.10 and 12,583.79

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Solution

The fourth proportional to 21,538.01, 29,718.10 and 12,583.79 is: 17,363.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.01 : 29,718.10 = 12,583.79 : x
  2. Step 2: Convert to fraction form
    21,538.01/29,718.10 = 12,583.79/x
  3. Step 3: Cross multiply
    21,538.01x = 29,718.10 × 12,583.79
  4. Step 4: Simplify right side
    21,538.01x = 373,966,118.09
  5. Step 5: Solve for x
    x = 373,966,118.09/21,538.01
  6. Step 6: Final answer
    x = 17,363.08

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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.