Home / 21,507.32-29,680.08-12,075.92

Finding the Fourth Proportional to 21,507.32, 29,680.08 and 12,075.92

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Solution

The fourth proportional to 21,507.32, 29,680.08 and 12,075.92 is: 16,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.32 : 29,680.08 = 12,075.92 : x
  2. Step 2: Convert to fraction form
    21,507.32/29,680.08 = 12,075.92/x
  3. Step 3: Cross multiply
    21,507.32x = 29,680.08 × 12,075.92
  4. Step 4: Simplify right side
    21,507.32x = 358,414,271.67
  5. Step 5: Solve for x
    x = 358,414,271.67/21,507.32
  6. Step 6: Final answer
    x = 16,664.76

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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.