Home / 13,862.60-19,130.78-7,730.44

Finding the Fourth Proportional to 13,862.60, 19,130.78 and 7,730.44

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Solution

The fourth proportional to 13,862.60, 19,130.78 and 7,730.44 is: 10,668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.60 : 19,130.78 = 7,730.44 : x
  2. Step 2: Convert to fraction form
    13,862.60/19,130.78 = 7,730.44/x
  3. Step 3: Cross multiply
    13,862.60x = 19,130.78 × 7,730.44
  4. Step 4: Simplify right side
    13,862.60x = 147,889,339.63
  5. Step 5: Solve for x
    x = 147,889,339.63/13,862.60
  6. Step 6: Final answer
    x = 10,668.23

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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.