Home / 20,743.36-28,623.29-12,681.07

Finding the Fourth Proportional to 20,743.36, 28,623.29 and 12,681.07

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Solution

The fourth proportional to 20,743.36, 28,623.29 and 12,681.07 is: 17,498.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.36 : 28,623.29 = 12,681.07 : x
  2. Step 2: Convert to fraction form
    20,743.36/28,623.29 = 12,681.07/x
  3. Step 3: Cross multiply
    20,743.36x = 28,623.29 × 12,681.07
  4. Step 4: Simplify right side
    20,743.36x = 362,973,944.12
  5. Step 5: Solve for x
    x = 362,973,944.12/20,743.36
  6. Step 6: Final answer
    x = 17,498.32

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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.