Home / 21,215.01-29,283.57-15,263.97

Finding the Fourth Proportional to 21,215.01, 29,283.57 and 15,263.97

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Solution

The fourth proportional to 21,215.01, 29,283.57 and 15,263.97 is: 21,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.01 : 29,283.57 = 15,263.97 : x
  2. Step 2: Convert to fraction form
    21,215.01/29,283.57 = 15,263.97/x
  3. Step 3: Cross multiply
    21,215.01x = 29,283.57 × 15,263.97
  4. Step 4: Simplify right side
    21,215.01x = 446,983,533.97
  5. Step 5: Solve for x
    x = 446,983,533.97/21,215.01
  6. Step 6: Final answer
    x = 21,069.21

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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.