Home / 21,088.64-31,628.52-13,569.68

Finding the Fourth Proportional to 21,088.64, 31,628.52 and 13,569.68

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Solution

The fourth proportional to 21,088.64, 31,628.52 and 13,569.68 is: 20,351.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.64 : 31,628.52 = 13,569.68 : x
  2. Step 2: Convert to fraction form
    21,088.64/31,628.52 = 13,569.68/x
  3. Step 3: Cross multiply
    21,088.64x = 31,628.52 × 13,569.68
  4. Step 4: Simplify right side
    21,088.64x = 429,188,895.27
  5. Step 5: Solve for x
    x = 429,188,895.27/21,088.64
  6. Step 6: Final answer
    x = 20,351.66

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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.