Home / 30,790.15-42,490.44-16,643.02

Finding the Fourth Proportional to 30,790.15, 42,490.44 and 16,643.02

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Solution

The fourth proportional to 30,790.15, 42,490.44 and 16,643.02 is: 22,967.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.15 : 42,490.44 = 16,643.02 : x
  2. Step 2: Convert to fraction form
    30,790.15/42,490.44 = 16,643.02/x
  3. Step 3: Cross multiply
    30,790.15x = 42,490.44 × 16,643.02
  4. Step 4: Simplify right side
    30,790.15x = 707,169,242.73
  5. Step 5: Solve for x
    x = 707,169,242.73/30,790.15
  6. Step 6: Final answer
    x = 22,967.39

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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.