Home / 30,650.07-42,284.84-19,316.55

Finding the Fourth Proportional to 30,650.07, 42,284.84 and 19,316.55

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Solution

The fourth proportional to 30,650.07, 42,284.84 and 19,316.55 is: 26,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,650.07 : 42,284.84 = 19,316.55 : x
  2. Step 2: Convert to fraction form
    30,650.07/42,284.84 = 19,316.55/x
  3. Step 3: Cross multiply
    30,650.07x = 42,284.84 × 19,316.55
  4. Step 4: Simplify right side
    30,650.07x = 816,797,226.10
  5. Step 5: Solve for x
    x = 816,797,226.10/30,650.07
  6. Step 6: Final answer
    x = 26,649.11

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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.