Home / 21,506.99-29,679.62-12,075.55

Finding the Fourth Proportional to 21,506.99, 29,679.62 and 12,075.55

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Solution

The fourth proportional to 21,506.99, 29,679.62 and 12,075.55 is: 16,664.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,506.99 : 29,679.62 = 12,075.55 : x
  2. Step 2: Convert to fraction form
    21,506.99/29,679.62 = 12,075.55/x
  3. Step 3: Cross multiply
    21,506.99x = 29,679.62 × 12,075.55
  4. Step 4: Simplify right side
    21,506.99x = 358,397,600.71
  5. Step 5: Solve for x
    x = 358,397,600.71/21,506.99
  6. Step 6: Final answer
    x = 16,664.24

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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.