Home / 21,507.60-29,675.64-12,075.54

Finding the Fourth Proportional to 21,507.60, 29,675.64 and 12,075.54

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Solution

The fourth proportional to 21,507.60, 29,675.64 and 12,075.54 is: 16,661.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.60 : 29,675.64 = 12,075.54 : x
  2. Step 2: Convert to fraction form
    21,507.60/29,675.64 = 12,075.54/x
  3. Step 3: Cross multiply
    21,507.60x = 29,675.64 × 12,075.54
  4. Step 4: Simplify right side
    21,507.60x = 358,349,377.85
  5. Step 5: Solve for x
    x = 358,349,377.85/21,507.60
  6. Step 6: Final answer
    x = 16,661.52

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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.