Home / 21,501.32-29,671.80-12,069.90

Finding the Fourth Proportional to 21,501.32, 29,671.80 and 12,069.90

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Solution

The fourth proportional to 21,501.32, 29,671.80 and 12,069.90 is: 16,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.32 : 29,671.80 = 12,069.90 : x
  2. Step 2: Convert to fraction form
    21,501.32/29,671.80 = 12,069.90/x
  3. Step 3: Cross multiply
    21,501.32x = 29,671.80 × 12,069.90
  4. Step 4: Simplify right side
    21,501.32x = 358,135,658.82
  5. Step 5: Solve for x
    x = 358,135,658.82/21,501.32
  6. Step 6: Final answer
    x = 16,656.45

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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.