Home / 30,930.32-42,681.50-18,184.03

Finding the Fourth Proportional to 30,930.32, 42,681.50 and 18,184.03

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Solution

The fourth proportional to 30,930.32, 42,681.50 and 18,184.03 is: 25,092.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,930.32 : 42,681.50 = 18,184.03 : x
  2. Step 2: Convert to fraction form
    30,930.32/42,681.50 = 18,184.03/x
  3. Step 3: Cross multiply
    30,930.32x = 42,681.50 × 18,184.03
  4. Step 4: Simplify right side
    30,930.32x = 776,121,547.01
  5. Step 5: Solve for x
    x = 776,121,547.01/30,930.32
  6. Step 6: Final answer
    x = 25,092.58

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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.