Home / 21,999.29-30,356.78-13,501.77

Finding the Fourth Proportional to 21,999.29, 30,356.78 and 13,501.77

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Solution

The fourth proportional to 21,999.29, 30,356.78 and 13,501.77 is: 18,631.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.29 : 30,356.78 = 13,501.77 : x
  2. Step 2: Convert to fraction form
    21,999.29/30,356.78 = 13,501.77/x
  3. Step 3: Cross multiply
    21,999.29x = 30,356.78 × 13,501.77
  4. Step 4: Simplify right side
    21,999.29x = 409,870,193.99
  5. Step 5: Solve for x
    x = 409,870,193.99/21,999.29
  6. Step 6: Final answer
    x = 18,631.06

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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.