Home / 40,915.70-61,373.55-12,840.09

Finding the Fourth Proportional to 40,915.70, 61,373.55 and 12,840.09

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Solution

The fourth proportional to 40,915.70, 61,373.55 and 12,840.09 is: 19,260.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,915.70 : 61,373.55 = 12,840.09 : x
  2. Step 2: Convert to fraction form
    40,915.70/61,373.55 = 12,840.09/x
  3. Step 3: Cross multiply
    40,915.70x = 61,373.55 × 12,840.09
  4. Step 4: Simplify right side
    40,915.70x = 788,041,723.62
  5. Step 5: Solve for x
    x = 788,041,723.62/40,915.70
  6. Step 6: Final answer
    x = 19,260.13

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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.