Home / 12,417.47-18,630.01-8,678.07

Finding the Fourth Proportional to 12,417.47, 18,630.01 and 8,678.07

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Solution

The fourth proportional to 12,417.47, 18,630.01 and 8,678.07 is: 13,019.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.47 : 18,630.01 = 8,678.07 : x
  2. Step 2: Convert to fraction form
    12,417.47/18,630.01 = 8,678.07/x
  3. Step 3: Cross multiply
    12,417.47x = 18,630.01 × 8,678.07
  4. Step 4: Simplify right side
    12,417.47x = 161,672,437.73
  5. Step 5: Solve for x
    x = 161,672,437.73/12,417.47
  6. Step 6: Final answer
    x = 13,019.76

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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.