Home / 21,535.63-29,712.49-12,576.67

Finding the Fourth Proportional to 21,535.63, 29,712.49 and 12,576.67

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Solution

The fourth proportional to 21,535.63, 29,712.49 and 12,576.67 is: 17,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.63 : 29,712.49 = 12,576.67 : x
  2. Step 2: Convert to fraction form
    21,535.63/29,712.49 = 12,576.67/x
  3. Step 3: Cross multiply
    21,535.63x = 29,712.49 × 12,576.67
  4. Step 4: Simplify right side
    21,535.63x = 373,684,075.89
  5. Step 5: Solve for x
    x = 373,684,075.89/21,535.63
  6. Step 6: Final answer
    x = 17,351.90

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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.