Home / 12,215.60-18,307.20-6,370.64

Finding the Fourth Proportional to 12,215.60, 18,307.20 and 6,370.64

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Solution

The fourth proportional to 12,215.60, 18,307.20 and 6,370.64 is: 9,547.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.60 : 18,307.20 = 6,370.64 : x
  2. Step 2: Convert to fraction form
    12,215.60/18,307.20 = 6,370.64/x
  3. Step 3: Cross multiply
    12,215.60x = 18,307.20 × 6,370.64
  4. Step 4: Simplify right side
    12,215.60x = 116,628,580.61
  5. Step 5: Solve for x
    x = 116,628,580.61/12,215.60
  6. Step 6: Final answer
    x = 9,547.51

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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.