Home / 19,810.00-27,340.81-12,643.01

Finding the Fourth Proportional to 19,810.00, 27,340.81 and 12,643.01

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Solution

The fourth proportional to 19,810.00, 27,340.81 and 12,643.01 is: 17,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.00 : 27,340.81 = 12,643.01 : x
  2. Step 2: Convert to fraction form
    19,810.00/27,340.81 = 12,643.01/x
  3. Step 3: Cross multiply
    19,810.00x = 27,340.81 × 12,643.01
  4. Step 4: Simplify right side
    19,810.00x = 345,669,965.93
  5. Step 5: Solve for x
    x = 345,669,965.93/19,810.00
  6. Step 6: Final answer
    x = 17,449.27

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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.