Home / 28,015.20-42,022.80-26,402.40

Finding the Fourth Proportional to 28,015.20, 42,022.80 and 26,402.40

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Solution

The fourth proportional to 28,015.20, 42,022.80 and 26,402.40 is: 39,603.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.20 : 42,022.80 = 26,402.40 : x
  2. Step 2: Convert to fraction form
    28,015.20/42,022.80 = 26,402.40/x
  3. Step 3: Cross multiply
    28,015.20x = 42,022.80 × 26,402.40
  4. Step 4: Simplify right side
    28,015.20x = 1,109,502,774.72
  5. Step 5: Solve for x
    x = 1,109,502,774.72/28,015.20
  6. Step 6: Final answer
    x = 39,603.60

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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.