Home / 30,570.93-42,187.01-18,629.91

Finding the Fourth Proportional to 30,570.93, 42,187.01 and 18,629.91

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Solution

The fourth proportional to 30,570.93, 42,187.01 and 18,629.91 is: 25,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570.93 : 42,187.01 = 18,629.91 : x
  2. Step 2: Convert to fraction form
    30,570.93/42,187.01 = 18,629.91/x
  3. Step 3: Cross multiply
    30,570.93x = 42,187.01 × 18,629.91
  4. Step 4: Simplify right side
    30,570.93x = 785,940,199.47
  5. Step 5: Solve for x
    x = 785,940,199.47/30,570.93
  6. Step 6: Final answer
    x = 25,708.74

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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.