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Finding the Fourth Proportional to 10,368, 15,629.76 and 10,212.48

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Solution

The fourth proportional to 10,368, 15,629.76 and 10,212.48 is: 15,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368 : 15,629.76 = 10,212.48 : x
  2. Step 2: Convert to fraction form
    10,368/15,629.76 = 10,212.48/x
  3. Step 3: Cross multiply
    10,368x = 15,629.76 × 10,212.48
  4. Step 4: Simplify right side
    10,368x = 159,618,611.40
  5. Step 5: Solve for x
    x = 159,618,611.40/10,368
  6. Step 6: Final answer
    x = 15,395.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.