Home / 30,900.51-42,643.03-18,154.22

Finding the Fourth Proportional to 30,900.51, 42,643.03 and 18,154.22

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Solution

The fourth proportional to 30,900.51, 42,643.03 and 18,154.22 is: 25,053.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,900.51 : 42,643.03 = 18,154.22 : x
  2. Step 2: Convert to fraction form
    30,900.51/42,643.03 = 18,154.22/x
  3. Step 3: Cross multiply
    30,900.51x = 42,643.03 × 18,154.22
  4. Step 4: Simplify right side
    30,900.51x = 774,150,948.09
  5. Step 5: Solve for x
    x = 774,150,948.09/30,900.51
  6. Step 6: Final answer
    x = 25,053.02

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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.