Home / 12,428.73-18,643.10-5,031.81

Finding the Fourth Proportional to 12,428.73, 18,643.10 and 5,031.81

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Solution

The fourth proportional to 12,428.73, 18,643.10 and 5,031.81 is: 7,547.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.73 : 18,643.10 = 5,031.81 : x
  2. Step 2: Convert to fraction form
    12,428.73/18,643.10 = 5,031.81/x
  3. Step 3: Cross multiply
    12,428.73x = 18,643.10 × 5,031.81
  4. Step 4: Simplify right side
    12,428.73x = 93,808,511.85
  5. Step 5: Solve for x
    x = 93,808,511.85/12,428.73
  6. Step 6: Final answer
    x = 7,547.72

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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.