Home / 12,618.04-18,929.28-5,218.35

Finding the Fourth Proportional to 12,618.04, 18,929.28 and 5,218.35

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Solution

The fourth proportional to 12,618.04, 18,929.28 and 5,218.35 is: 7,828.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.04 : 18,929.28 = 5,218.35 : x
  2. Step 2: Convert to fraction form
    12,618.04/18,929.28 = 5,218.35/x
  3. Step 3: Cross multiply
    12,618.04x = 18,929.28 × 5,218.35
  4. Step 4: Simplify right side
    12,618.04x = 98,779,608.29
  5. Step 5: Solve for x
    x = 98,779,608.29/12,618.04
  6. Step 6: Final answer
    x = 7,828.44

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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.