Home / 12,421.48-17,149.30-8,547.56

Finding the Fourth Proportional to 12,421.48, 17,149.30 and 8,547.56

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Solution

The fourth proportional to 12,421.48, 17,149.30 and 8,547.56 is: 11,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.48 : 17,149.30 = 8,547.56 : x
  2. Step 2: Convert to fraction form
    12,421.48/17,149.30 = 8,547.56/x
  3. Step 3: Cross multiply
    12,421.48x = 17,149.30 × 8,547.56
  4. Step 4: Simplify right side
    12,421.48x = 146,584,670.71
  5. Step 5: Solve for x
    x = 146,584,670.71/12,421.48
  6. Step 6: Final answer
    x = 11,800.90

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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.