Home / 12,312.21-16,990.95-7,007.37

Finding the Fourth Proportional to 12,312.21, 16,990.95 and 7,007.37

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Solution

The fourth proportional to 12,312.21, 16,990.95 and 7,007.37 is: 9,670.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.21 : 16,990.95 = 7,007.37 : x
  2. Step 2: Convert to fraction form
    12,312.21/16,990.95 = 7,007.37/x
  3. Step 3: Cross multiply
    12,312.21x = 16,990.95 × 7,007.37
  4. Step 4: Simplify right side
    12,312.21x = 119,061,873.30
  5. Step 5: Solve for x
    x = 119,061,873.30/12,312.21
  6. Step 6: Final answer
    x = 9,670.23

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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.