Home / 21,477.15-29,643.57-12,529.08

Finding the Fourth Proportional to 21,477.15, 29,643.57 and 12,529.08

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Solution

The fourth proportional to 21,477.15, 29,643.57 and 12,529.08 is: 17,293.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.15 : 29,643.57 = 12,529.08 : x
  2. Step 2: Convert to fraction form
    21,477.15/29,643.57 = 12,529.08/x
  3. Step 3: Cross multiply
    21,477.15x = 29,643.57 × 12,529.08
  4. Step 4: Simplify right side
    21,477.15x = 371,406,660.02
  5. Step 5: Solve for x
    x = 371,406,660.02/21,477.15
  6. Step 6: Final answer
    x = 17,293.11

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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.