Home / 30,790.29-42,490.58-16,643.13

Finding the Fourth Proportional to 30,790.29, 42,490.58 and 16,643.13

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Solution

The fourth proportional to 30,790.29, 42,490.58 and 16,643.13 is: 22,967.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.29 : 42,490.58 = 16,643.13 : x
  2. Step 2: Convert to fraction form
    30,790.29/42,490.58 = 16,643.13/x
  3. Step 3: Cross multiply
    30,790.29x = 42,490.58 × 16,643.13
  4. Step 4: Simplify right side
    30,790.29x = 707,176,163.50
  5. Step 5: Solve for x
    x = 707,176,163.50/30,790.29
  6. Step 6: Final answer
    x = 22,967.51

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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.