Home / 15,934.77-21,989.75-9,219.87

Finding the Fourth Proportional to 15,934.77, 21,989.75 and 9,219.87

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Solution

The fourth proportional to 15,934.77, 21,989.75 and 9,219.87 is: 12,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.77 : 21,989.75 = 9,219.87 : x
  2. Step 2: Convert to fraction form
    15,934.77/21,989.75 = 9,219.87/x
  3. Step 3: Cross multiply
    15,934.77x = 21,989.75 × 9,219.87
  4. Step 4: Simplify right side
    15,934.77x = 202,742,590.23
  5. Step 5: Solve for x
    x = 202,742,590.23/15,934.77
  6. Step 6: Final answer
    x = 12,723.28

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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.