Home / 20,339.52-30,560.40-12,947.28

Finding the Fourth Proportional to 20,339.52, 30,560.40 and 12,947.28

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Solution

The fourth proportional to 20,339.52, 30,560.40 and 12,947.28 is: 19,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.52 : 30,560.40 = 12,947.28 : x
  2. Step 2: Convert to fraction form
    20,339.52/30,560.40 = 12,947.28/x
  3. Step 3: Cross multiply
    20,339.52x = 30,560.40 × 12,947.28
  4. Step 4: Simplify right side
    20,339.52x = 395,674,055.71
  5. Step 5: Solve for x
    x = 395,674,055.71/20,339.52
  6. Step 6: Final answer
    x = 19,453.46

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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.