Home / 19,145.40-26,420.40-10,647.60

Finding the Fourth Proportional to 19,145.40, 26,420.40 and 10,647.60

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Solution

The fourth proportional to 19,145.40, 26,420.40 and 10,647.60 is: 14,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.40 : 26,420.40 = 10,647.60 : x
  2. Step 2: Convert to fraction form
    19,145.40/26,420.40 = 10,647.60/x
  3. Step 3: Cross multiply
    19,145.40x = 26,420.40 × 10,647.60
  4. Step 4: Simplify right side
    19,145.40x = 281,313,851.04
  5. Step 5: Solve for x
    x = 281,313,851.04/19,145.40
  6. Step 6: Final answer
    x = 14,693.55

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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.