Home / 12,911.60-19,343.10-6,650.30

Finding the Fourth Proportional to 12,911.60, 19,343.10 and 6,650.30

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Solution

The fourth proportional to 12,911.60, 19,343.10 and 6,650.30 is: 9,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.60 : 19,343.10 = 6,650.30 : x
  2. Step 2: Convert to fraction form
    12,911.60/19,343.10 = 6,650.30/x
  3. Step 3: Cross multiply
    12,911.60x = 19,343.10 × 6,650.30
  4. Step 4: Simplify right side
    12,911.60x = 128,637,417.93
  5. Step 5: Solve for x
    x = 128,637,417.93/12,911.60
  6. Step 6: Final answer
    x = 9,962.93

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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.