Home / 10,858.40-14,984.64-6,143.60

Finding the Fourth Proportional to 10,858.40, 14,984.64 and 6,143.60

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Solution

The fourth proportional to 10,858.40, 14,984.64 and 6,143.60 is: 8,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.40 : 14,984.64 = 6,143.60 : x
  2. Step 2: Convert to fraction form
    10,858.40/14,984.64 = 6,143.60/x
  3. Step 3: Cross multiply
    10,858.40x = 14,984.64 × 6,143.60
  4. Step 4: Simplify right side
    10,858.40x = 92,059,634.30
  5. Step 5: Solve for x
    x = 92,059,634.30/10,858.40
  6. Step 6: Final answer
    x = 8,478.20

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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.