Home / 15,027.20-20,697.60-13,030.40

Finding the Fourth Proportional to 15,027.20, 20,697.60 and 13,030.40

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Solution

The fourth proportional to 15,027.20, 20,697.60 and 13,030.40 is: 17,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.20 : 20,697.60 = 13,030.40 : x
  2. Step 2: Convert to fraction form
    15,027.20/20,697.60 = 13,030.40/x
  3. Step 3: Cross multiply
    15,027.20x = 20,697.60 × 13,030.40
  4. Step 4: Simplify right side
    15,027.20x = 269,698,007.04
  5. Step 5: Solve for x
    x = 269,698,007.04/15,027.20
  6. Step 6: Final answer
    x = 17,947.32

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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.