Home / 30,572.07-42,189.89-18,470.87

Finding the Fourth Proportional to 30,572.07, 42,189.89 and 18,470.87

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Solution

The fourth proportional to 30,572.07, 42,189.89 and 18,470.87 is: 25,490.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,572.07 : 42,189.89 = 18,470.87 : x
  2. Step 2: Convert to fraction form
    30,572.07/42,189.89 = 18,470.87/x
  3. Step 3: Cross multiply
    30,572.07x = 42,189.89 × 18,470.87
  4. Step 4: Simplify right side
    30,572.07x = 779,283,791.37
  5. Step 5: Solve for x
    x = 779,283,791.37/30,572.07
  6. Step 6: Final answer
    x = 25,490.06

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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.