Home / 21,294.95-31,953.38-11,453.45

Finding the Fourth Proportional to 21,294.95, 31,953.38 and 11,453.45

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Solution

The fourth proportional to 21,294.95, 31,953.38 and 11,453.45 is: 17,186.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.95 : 31,953.38 = 11,453.45 : x
  2. Step 2: Convert to fraction form
    21,294.95/31,953.38 = 11,453.45/x
  3. Step 3: Cross multiply
    21,294.95x = 31,953.38 × 11,453.45
  4. Step 4: Simplify right side
    21,294.95x = 365,976,223.13
  5. Step 5: Solve for x
    x = 365,976,223.13/21,294.95
  6. Step 6: Final answer
    x = 17,186.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.