Home / 12,547.08-18,816.12-3,779.28

Finding the Fourth Proportional to 12,547.08, 18,816.12 and 3,779.28

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Solution

The fourth proportional to 12,547.08, 18,816.12 and 3,779.28 is: 5,667.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.08 : 18,816.12 = 3,779.28 : x
  2. Step 2: Convert to fraction form
    12,547.08/18,816.12 = 3,779.28/x
  3. Step 3: Cross multiply
    12,547.08x = 18,816.12 × 3,779.28
  4. Step 4: Simplify right side
    12,547.08x = 71,111,385.99
  5. Step 5: Solve for x
    x = 71,111,385.99/12,547.08
  6. Step 6: Final answer
    x = 5,667.56

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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.