Home / 31,015.28-42,801.37-18,437.60

Finding the Fourth Proportional to 31,015.28, 42,801.37 and 18,437.60

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Solution

The fourth proportional to 31,015.28, 42,801.37 and 18,437.60 is: 25,444.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.28 : 42,801.37 = 18,437.60 : x
  2. Step 2: Convert to fraction form
    31,015.28/42,801.37 = 18,437.60/x
  3. Step 3: Cross multiply
    31,015.28x = 42,801.37 × 18,437.60
  4. Step 4: Simplify right side
    31,015.28x = 789,154,539.51
  5. Step 5: Solve for x
    x = 789,154,539.51/31,015.28
  6. Step 6: Final answer
    x = 25,444.06

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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.