Home / 30,451.53-45,681.01-12,915.44

Finding the Fourth Proportional to 30,451.53, 45,681.01 and 12,915.44

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Solution

The fourth proportional to 30,451.53, 45,681.01 and 12,915.44 is: 19,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,451.53 : 45,681.01 = 12,915.44 : x
  2. Step 2: Convert to fraction form
    30,451.53/45,681.01 = 12,915.44/x
  3. Step 3: Cross multiply
    30,451.53x = 45,681.01 × 12,915.44
  4. Step 4: Simplify right side
    30,451.53x = 589,990,050.81
  5. Step 5: Solve for x
    x = 589,990,050.81/30,451.53
  6. Step 6: Final answer
    x = 19,374.73

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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.