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Finding the Fourth Proportional to 14,075.72, 21,122.90 and 7,506.64

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Solution

The fourth proportional to 14,075.72, 21,122.90 and 7,506.64 is: 11,264.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,075.72 : 21,122.90 = 7,506.64 : x
  2. Step 2: Convert to fraction form
    14,075.72/21,122.90 = 7,506.64/x
  3. Step 3: Cross multiply
    14,075.72x = 21,122.90 × 7,506.64
  4. Step 4: Simplify right side
    14,075.72x = 158,562,006.06
  5. Step 5: Solve for x
    x = 158,562,006.06/14,075.72
  6. Step 6: Final answer
    x = 11,264.93

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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.