Home / 30,790.76-42,491.28-16,643.60

Finding the Fourth Proportional to 30,790.76, 42,491.28 and 16,643.60

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Solution

The fourth proportional to 30,790.76, 42,491.28 and 16,643.60 is: 22,968.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.76 : 42,491.28 = 16,643.60 : x
  2. Step 2: Convert to fraction form
    30,790.76/42,491.28 = 16,643.60/x
  3. Step 3: Cross multiply
    30,790.76x = 42,491.28 × 16,643.60
  4. Step 4: Simplify right side
    30,790.76x = 707,207,996.61
  5. Step 5: Solve for x
    x = 707,207,996.61/30,790.76
  6. Step 6: Final answer
    x = 22,968.19

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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.