Home / 21,315.93-29,415.59-11,756.70

Finding the Fourth Proportional to 21,315.93, 29,415.59 and 11,756.70

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Solution

The fourth proportional to 21,315.93, 29,415.59 and 11,756.70 is: 16,224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.93 : 29,415.59 = 11,756.70 : x
  2. Step 2: Convert to fraction form
    21,315.93/29,415.59 = 11,756.70/x
  3. Step 3: Cross multiply
    21,315.93x = 29,415.59 × 11,756.70
  4. Step 4: Simplify right side
    21,315.93x = 345,830,296.34
  5. Step 5: Solve for x
    x = 345,830,296.34/21,315.93
  6. Step 6: Final answer
    x = 16,224.03

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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.