Home / 30,572.56-42,190.36-19,955.92

Finding the Fourth Proportional to 30,572.56, 42,190.36 and 19,955.92

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Solution

The fourth proportional to 30,572.56, 42,190.36 and 19,955.92 is: 27,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,572.56 : 42,190.36 = 19,955.92 : x
  2. Step 2: Convert to fraction form
    30,572.56/42,190.36 = 19,955.92/x
  3. Step 3: Cross multiply
    30,572.56x = 42,190.36 × 19,955.92
  4. Step 4: Simplify right side
    30,572.56x = 841,947,448.93
  5. Step 5: Solve for x
    x = 841,947,448.93/30,572.56
  6. Step 6: Final answer
    x = 27,539.32

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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.