Home / 30,800.81-42,501.47-17,371.28

Finding the Fourth Proportional to 30,800.81, 42,501.47 and 17,371.28

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Solution

The fourth proportional to 30,800.81, 42,501.47 and 17,371.28 is: 23,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.81 : 42,501.47 = 17,371.28 : x
  2. Step 2: Convert to fraction form
    30,800.81/42,501.47 = 17,371.28/x
  3. Step 3: Cross multiply
    30,800.81x = 42,501.47 × 17,371.28
  4. Step 4: Simplify right side
    30,800.81x = 738,304,955.18
  5. Step 5: Solve for x
    x = 738,304,955.18/30,800.81
  6. Step 6: Final answer
    x = 23,970.31

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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.