Home / 30,464.02-42,045.11-18,531.10

Finding the Fourth Proportional to 30,464.02, 42,045.11 and 18,531.10

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Solution

The fourth proportional to 30,464.02, 42,045.11 and 18,531.10 is: 25,575.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,464.02 : 42,045.11 = 18,531.10 : x
  2. Step 2: Convert to fraction form
    30,464.02/42,045.11 = 18,531.10/x
  3. Step 3: Cross multiply
    30,464.02x = 42,045.11 × 18,531.10
  4. Step 4: Simplify right side
    30,464.02x = 779,142,137.92
  5. Step 5: Solve for x
    x = 779,142,137.92/30,464.02
  6. Step 6: Final answer
    x = 25,575.81

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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.