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Finding the Fourth Proportional to 30,885.80, 46,350.30 and 13,368.20

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Solution

The fourth proportional to 30,885.80, 46,350.30 and 13,368.20 is: 20,061.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.80 : 46,350.30 = 13,368.20 : x
  2. Step 2: Convert to fraction form
    30,885.80/46,350.30 = 13,368.20/x
  3. Step 3: Cross multiply
    30,885.80x = 46,350.30 × 13,368.20
  4. Step 4: Simplify right side
    30,885.80x = 619,620,080.46
  5. Step 5: Solve for x
    x = 619,620,080.46/30,885.80
  6. Step 6: Final answer
    x = 20,061.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.