Home / 30,790.03-42,490.18-16,642.84

Finding the Fourth Proportional to 30,790.03, 42,490.18 and 16,642.84

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Solution

The fourth proportional to 30,790.03, 42,490.18 and 16,642.84 is: 22,967.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.03 : 42,490.18 = 16,642.84 : x
  2. Step 2: Convert to fraction form
    30,790.03/42,490.18 = 16,642.84/x
  3. Step 3: Cross multiply
    30,790.03x = 42,490.18 × 16,642.84
  4. Step 4: Simplify right side
    30,790.03x = 707,157,267.31
  5. Step 5: Solve for x
    x = 707,157,267.31/30,790.03
  6. Step 6: Final answer
    x = 22,967.09

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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.