Home / 21,558.51-29,742.47-15,906.74

Finding the Fourth Proportional to 21,558.51, 29,742.47 and 15,906.74

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Solution

The fourth proportional to 21,558.51, 29,742.47 and 15,906.74 is: 21,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.51 : 29,742.47 = 15,906.74 : x
  2. Step 2: Convert to fraction form
    21,558.51/29,742.47 = 15,906.74/x
  3. Step 3: Cross multiply
    21,558.51x = 29,742.47 × 15,906.74
  4. Step 4: Simplify right side
    21,558.51x = 473,105,509.00
  5. Step 5: Solve for x
    x = 473,105,509.00/21,558.51
  6. Step 6: Final answer
    x = 21,945.19

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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.