Home / 21,866.56-30,179.16-13,373.68

Finding the Fourth Proportional to 21,866.56, 30,179.16 and 13,373.68

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Solution

The fourth proportional to 21,866.56, 30,179.16 and 13,373.68 is: 18,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.56 : 30,179.16 = 13,373.68 : x
  2. Step 2: Convert to fraction form
    21,866.56/30,179.16 = 13,373.68/x
  3. Step 3: Cross multiply
    21,866.56x = 30,179.16 × 13,373.68
  4. Step 4: Simplify right side
    21,866.56x = 403,606,428.51
  5. Step 5: Solve for x
    x = 403,606,428.51/21,866.56
  6. Step 6: Final answer
    x = 18,457.70

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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.