Home / 30,556.29-42,088.80-21,588.23

Finding the Fourth Proportional to 30,556.29, 42,088.80 and 21,588.23

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Solution

The fourth proportional to 30,556.29, 42,088.80 and 21,588.23 is: 29,736.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,556.29 : 42,088.80 = 21,588.23 : x
  2. Step 2: Convert to fraction form
    30,556.29/42,088.80 = 21,588.23/x
  3. Step 3: Cross multiply
    30,556.29x = 42,088.80 × 21,588.23
  4. Step 4: Simplify right side
    30,556.29x = 908,622,484.38
  5. Step 5: Solve for x
    x = 908,622,484.38/30,556.29
  6. Step 6: Final answer
    x = 29,736.02

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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.