Home / 30,790.51-42,490.88-16,643.36

Finding the Fourth Proportional to 30,790.51, 42,490.88 and 16,643.36

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Solution

The fourth proportional to 30,790.51, 42,490.88 and 16,643.36 is: 22,967.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.51 : 42,490.88 = 16,643.36 : x
  2. Step 2: Convert to fraction form
    30,790.51/42,490.88 = 16,643.36/x
  3. Step 3: Cross multiply
    30,790.51x = 42,490.88 × 16,643.36
  4. Step 4: Simplify right side
    30,790.51x = 707,190,858.97
  5. Step 5: Solve for x
    x = 707,190,858.97/30,790.51
  6. Step 6: Final answer
    x = 22,967.82

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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.