Home / 13,987.08-19,288.51-8,949.47

Finding the Fourth Proportional to 13,987.08, 19,288.51 and 8,949.47

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Solution

The fourth proportional to 13,987.08, 19,288.51 and 8,949.47 is: 12,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.08 : 19,288.51 = 8,949.47 : x
  2. Step 2: Convert to fraction form
    13,987.08/19,288.51 = 8,949.47/x
  3. Step 3: Cross multiply
    13,987.08x = 19,288.51 × 8,949.47
  4. Step 4: Simplify right side
    13,987.08x = 172,621,822.77
  5. Step 5: Solve for x
    x = 172,621,822.77/13,987.08
  6. Step 6: Final answer
    x = 12,341.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.