Home / 30,977.30-42,748.73-16,830.16

Finding the Fourth Proportional to 30,977.30, 42,748.73 and 16,830.16

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Solution

The fourth proportional to 30,977.30, 42,748.73 and 16,830.16 is: 23,225.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.30 : 42,748.73 = 16,830.16 : x
  2. Step 2: Convert to fraction form
    30,977.30/42,748.73 = 16,830.16/x
  3. Step 3: Cross multiply
    30,977.30x = 42,748.73 × 16,830.16
  4. Step 4: Simplify right side
    30,977.30x = 719,467,965.70
  5. Step 5: Solve for x
    x = 719,467,965.70/30,977.30
  6. Step 6: Final answer
    x = 23,225.65

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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.