Home / 12,307.20-16,981.74-7,000.98

Finding the Fourth Proportional to 12,307.20, 16,981.74 and 7,000.98

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Solution

The fourth proportional to 12,307.20, 16,981.74 and 7,000.98 is: 9,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.20 : 16,981.74 = 7,000.98 : x
  2. Step 2: Convert to fraction form
    12,307.20/16,981.74 = 7,000.98/x
  3. Step 3: Cross multiply
    12,307.20x = 16,981.74 × 7,000.98
  4. Step 4: Simplify right side
    12,307.20x = 118,888,822.11
  5. Step 5: Solve for x
    x = 118,888,822.11/12,307.20
  6. Step 6: Final answer
    x = 9,660.10

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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.