Home / 30,790.63-42,490.98-16,643.48

Finding the Fourth Proportional to 30,790.63, 42,490.98 and 16,643.48

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Solution

The fourth proportional to 30,790.63, 42,490.98 and 16,643.48 is: 22,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.63 : 42,490.98 = 16,643.48 : x
  2. Step 2: Convert to fraction form
    30,790.63/42,490.98 = 16,643.48/x
  3. Step 3: Cross multiply
    30,790.63x = 42,490.98 × 16,643.48
  4. Step 4: Simplify right side
    30,790.63x = 707,197,563.36
  5. Step 5: Solve for x
    x = 707,197,563.36/30,790.63
  6. Step 6: Final answer
    x = 22,967.95

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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.