Home / 12,307.40-16,985.08-7,003.92

Finding the Fourth Proportional to 12,307.40, 16,985.08 and 7,003.92

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Solution

The fourth proportional to 12,307.40, 16,985.08 and 7,003.92 is: 9,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.40 : 16,985.08 = 7,003.92 : x
  2. Step 2: Convert to fraction form
    12,307.40/16,985.08 = 7,003.92/x
  3. Step 3: Cross multiply
    12,307.40x = 16,985.08 × 7,003.92
  4. Step 4: Simplify right side
    12,307.40x = 118,962,141.51
  5. Step 5: Solve for x
    x = 118,962,141.51/12,307.40
  6. Step 6: Final answer
    x = 9,665.90

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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.