Home / 12,333.40-18,500.10-11,312.80

Finding the Fourth Proportional to 12,333.40, 18,500.10 and 11,312.80

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Solution

The fourth proportional to 12,333.40, 18,500.10 and 11,312.80 is: 16,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,333.40 : 18,500.10 = 11,312.80 : x
  2. Step 2: Convert to fraction form
    12,333.40/18,500.10 = 11,312.80/x
  3. Step 3: Cross multiply
    12,333.40x = 18,500.10 × 11,312.80
  4. Step 4: Simplify right side
    12,333.40x = 209,287,931.28
  5. Step 5: Solve for x
    x = 209,287,931.28/12,333.40
  6. Step 6: Final answer
    x = 16,969.20

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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.