Home / 42,015.84-63,017.28-18,638.16

Finding the Fourth Proportional to 42,015.84, 63,017.28 and 18,638.16

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Solution

The fourth proportional to 42,015.84, 63,017.28 and 18,638.16 is: 27,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,015.84 : 63,017.28 = 18,638.16 : x
  2. Step 2: Convert to fraction form
    42,015.84/63,017.28 = 18,638.16/x
  3. Step 3: Cross multiply
    42,015.84x = 63,017.28 × 18,638.16
  4. Step 4: Simplify right side
    42,015.84x = 1,174,526,147.40
  5. Step 5: Solve for x
    x = 1,174,526,147.40/42,015.84
  6. Step 6: Final answer
    x = 27,954.37

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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.