Home / 42,415.60-63,623.40-12,830.35

Finding the Fourth Proportional to 42,415.60, 63,623.40 and 12,830.35

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Solution

The fourth proportional to 42,415.60, 63,623.40 and 12,830.35 is: 19,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,415.60 : 63,623.40 = 12,830.35 : x
  2. Step 2: Convert to fraction form
    42,415.60/63,623.40 = 12,830.35/x
  3. Step 3: Cross multiply
    42,415.60x = 63,623.40 × 12,830.35
  4. Step 4: Simplify right side
    42,415.60x = 816,310,490.19
  5. Step 5: Solve for x
    x = 816,310,490.19/42,415.60
  6. Step 6: Final answer
    x = 19,245.53

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Similar ratio
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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.