Home / 18,386.40-27,571.44-5,235.78

Finding the Fourth Proportional to 18,386.40, 27,571.44 and 5,235.78

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Solution

The fourth proportional to 18,386.40, 27,571.44 and 5,235.78 is: 7,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.40 : 27,571.44 = 5,235.78 : x
  2. Step 2: Convert to fraction form
    18,386.40/27,571.44 = 5,235.78/x
  3. Step 3: Cross multiply
    18,386.40x = 27,571.44 × 5,235.78
  4. Step 4: Simplify right side
    18,386.40x = 144,357,994.12
  5. Step 5: Solve for x
    x = 144,357,994.12/18,386.40
  6. Step 6: Final answer
    x = 7,851.35

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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.