Home / 30,889.81-42,632.49-19,560.34

Finding the Fourth Proportional to 30,889.81, 42,632.49 and 19,560.34

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Solution

The fourth proportional to 30,889.81, 42,632.49 and 19,560.34 is: 26,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,889.81 : 42,632.49 = 19,560.34 : x
  2. Step 2: Convert to fraction form
    30,889.81/42,632.49 = 19,560.34/x
  3. Step 3: Cross multiply
    30,889.81x = 42,632.49 × 19,560.34
  4. Step 4: Simplify right side
    30,889.81x = 833,906,126.09
  5. Step 5: Solve for x
    x = 833,906,126.09/30,889.81
  6. Step 6: Final answer
    x = 26,996.15

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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.