Home / 12,275.08-18,418.08-6,430.32

Finding the Fourth Proportional to 12,275.08, 18,418.08 and 6,430.32

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Solution

The fourth proportional to 12,275.08, 18,418.08 and 6,430.32 is: 9,648.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.08 : 18,418.08 = 6,430.32 : x
  2. Step 2: Convert to fraction form
    12,275.08/18,418.08 = 6,430.32/x
  3. Step 3: Cross multiply
    12,275.08x = 18,418.08 × 6,430.32
  4. Step 4: Simplify right side
    12,275.08x = 118,434,148.19
  5. Step 5: Solve for x
    x = 118,434,148.19/12,275.08
  6. Step 6: Final answer
    x = 9,648.34

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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.