Home / 30,427.23-45,640.83-12,657.55

Finding the Fourth Proportional to 30,427.23, 45,640.83 and 12,657.55

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Solution

The fourth proportional to 30,427.23, 45,640.83 and 12,657.55 is: 18,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,427.23 : 45,640.83 = 12,657.55 : x
  2. Step 2: Convert to fraction form
    30,427.23/45,640.83 = 12,657.55/x
  3. Step 3: Cross multiply
    30,427.23x = 45,640.83 × 12,657.55
  4. Step 4: Simplify right side
    30,427.23x = 577,701,106.71
  5. Step 5: Solve for x
    x = 577,701,106.71/30,427.23
  6. Step 6: Final answer
    x = 18,986.32

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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.