Home / 30,743.36-42,426.69-18,806.48

Finding the Fourth Proportional to 30,743.36, 42,426.69 and 18,806.48

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Solution

The fourth proportional to 30,743.36, 42,426.69 and 18,806.48 is: 25,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,743.36 : 42,426.69 = 18,806.48 : x
  2. Step 2: Convert to fraction form
    30,743.36/42,426.69 = 18,806.48/x
  3. Step 3: Cross multiply
    30,743.36x = 42,426.69 × 18,806.48
  4. Step 4: Simplify right side
    30,743.36x = 797,896,696.95
  5. Step 5: Solve for x
    x = 797,896,696.95/30,743.36
  6. Step 6: Final answer
    x = 25,953.46

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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.