Home / 13,915.79-20,828.52-10,217.19

Finding the Fourth Proportional to 13,915.79, 20,828.52 and 10,217.19

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Solution

The fourth proportional to 13,915.79, 20,828.52 and 10,217.19 is: 15,292.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.79 : 20,828.52 = 10,217.19 : x
  2. Step 2: Convert to fraction form
    13,915.79/20,828.52 = 10,217.19/x
  3. Step 3: Cross multiply
    13,915.79x = 20,828.52 × 10,217.19
  4. Step 4: Simplify right side
    13,915.79x = 212,808,946.26
  5. Step 5: Solve for x
    x = 212,808,946.26/13,915.79
  6. Step 6: Final answer
    x = 15,292.63

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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.