Home / 14,919.88-20,590.44-9,875.40

Finding the Fourth Proportional to 14,919.88, 20,590.44 and 9,875.40

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Solution

The fourth proportional to 14,919.88, 20,590.44 and 9,875.40 is: 13,628.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,919.88 : 20,590.44 = 9,875.40 : x
  2. Step 2: Convert to fraction form
    14,919.88/20,590.44 = 9,875.40/x
  3. Step 3: Cross multiply
    14,919.88x = 20,590.44 × 9,875.40
  4. Step 4: Simplify right side
    14,919.88x = 203,338,831.18
  5. Step 5: Solve for x
    x = 203,338,831.18/14,919.88
  6. Step 6: Final answer
    x = 13,628.72

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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.