Home / 19,345.20-28,979.40-10,564.40

Finding the Fourth Proportional to 19,345.20, 28,979.40 and 10,564.40

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Solution

The fourth proportional to 19,345.20, 28,979.40 and 10,564.40 is: 15,825.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.20 : 28,979.40 = 10,564.40 : x
  2. Step 2: Convert to fraction form
    19,345.20/28,979.40 = 10,564.40/x
  3. Step 3: Cross multiply
    19,345.20x = 28,979.40 × 10,564.40
  4. Step 4: Simplify right side
    19,345.20x = 306,149,973.36
  5. Step 5: Solve for x
    x = 306,149,973.36/19,345.20
  6. Step 6: Final answer
    x = 15,825.63

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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.