Home / 21,065.90-29,075.56-13,111.34

Finding the Fourth Proportional to 21,065.90, 29,075.56 and 13,111.34

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Solution

The fourth proportional to 21,065.90, 29,075.56 and 13,111.34 is: 18,096.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.90 : 29,075.56 = 13,111.34 : x
  2. Step 2: Convert to fraction form
    21,065.90/29,075.56 = 13,111.34/x
  3. Step 3: Cross multiply
    21,065.90x = 29,075.56 × 13,111.34
  4. Step 4: Simplify right side
    21,065.90x = 381,219,552.85
  5. Step 5: Solve for x
    x = 381,219,552.85/21,065.90
  6. Step 6: Final answer
    x = 18,096.52

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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.