Home / 39,895.95-55,055.75-21,992.62

Finding the Fourth Proportional to 39,895.95, 55,055.75 and 21,992.62

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Solution

The fourth proportional to 39,895.95, 55,055.75 and 21,992.62 is: 30,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,895.95 : 55,055.75 = 21,992.62 : x
  2. Step 2: Convert to fraction form
    39,895.95/55,055.75 = 21,992.62/x
  3. Step 3: Cross multiply
    39,895.95x = 55,055.75 × 21,992.62
  4. Step 4: Simplify right side
    39,895.95x = 1,210,820,188.57
  5. Step 5: Solve for x
    x = 1,210,820,188.57/39,895.95
  6. Step 6: Final answer
    x = 30,349.45

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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.