Home / 12,312.36-16,990.10-7,276.19

Finding the Fourth Proportional to 12,312.36, 16,990.10 and 7,276.19

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Solution

The fourth proportional to 12,312.36, 16,990.10 and 7,276.19 is: 10,040.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.36 : 16,990.10 = 7,276.19 : x
  2. Step 2: Convert to fraction form
    12,312.36/16,990.10 = 7,276.19/x
  3. Step 3: Cross multiply
    12,312.36x = 16,990.10 × 7,276.19
  4. Step 4: Simplify right side
    12,312.36x = 123,623,074.39
  5. Step 5: Solve for x
    x = 123,623,074.39/12,312.36
  6. Step 6: Final answer
    x = 10,040.57

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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.