Home / 21,397.95-29,528.31-11,837.23

Finding the Fourth Proportional to 21,397.95, 29,528.31 and 11,837.23

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Solution

The fourth proportional to 21,397.95, 29,528.31 and 11,837.23 is: 16,334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.95 : 29,528.31 = 11,837.23 : x
  2. Step 2: Convert to fraction form
    21,397.95/29,528.31 = 11,837.23/x
  3. Step 3: Cross multiply
    21,397.95x = 29,528.31 × 11,837.23
  4. Step 4: Simplify right side
    21,397.95x = 349,533,396.98
  5. Step 5: Solve for x
    x = 349,533,396.98/21,397.95
  6. Step 6: Final answer
    x = 16,334.90

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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.