Home / 12,345.96-18,521.28-6,425.67

Finding the Fourth Proportional to 12,345.96, 18,521.28 and 6,425.67

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Solution

The fourth proportional to 12,345.96, 18,521.28 and 6,425.67 is: 9,639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.96 : 18,521.28 = 6,425.67 : x
  2. Step 2: Convert to fraction form
    12,345.96/18,521.28 = 6,425.67/x
  3. Step 3: Cross multiply
    12,345.96x = 18,521.28 × 6,425.67
  4. Step 4: Simplify right side
    12,345.96x = 119,011,633.26
  5. Step 5: Solve for x
    x = 119,011,633.26/12,345.96
  6. Step 6: Final answer
    x = 9,639.72

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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.