Home / 28,227.31-42,345.09-8,507.40

Finding the Fourth Proportional to 28,227.31, 42,345.09 and 8,507.40

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Solution

The fourth proportional to 28,227.31, 42,345.09 and 8,507.40 is: 12,762.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.31 : 42,345.09 = 8,507.40 : x
  2. Step 2: Convert to fraction form
    28,227.31/42,345.09 = 8,507.40/x
  3. Step 3: Cross multiply
    28,227.31x = 42,345.09 × 8,507.40
  4. Step 4: Simplify right side
    28,227.31x = 360,246,618.67
  5. Step 5: Solve for x
    x = 360,246,618.67/28,227.31
  6. Step 6: Final answer
    x = 12,762.34

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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.