Home / 13,721.64-20,585.49-4,364.52

Finding the Fourth Proportional to 13,721.64, 20,585.49 and 4,364.52

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Solution

The fourth proportional to 13,721.64, 20,585.49 and 4,364.52 is: 6,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.64 : 20,585.49 = 4,364.52 : x
  2. Step 2: Convert to fraction form
    13,721.64/20,585.49 = 4,364.52/x
  3. Step 3: Cross multiply
    13,721.64x = 20,585.49 × 4,364.52
  4. Step 4: Simplify right side
    13,721.64x = 89,845,782.81
  5. Step 5: Solve for x
    x = 89,845,782.81/13,721.64
  6. Step 6: Final answer
    x = 6,547.74

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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.