Home / 19,000.50-28,485.40-7,915.53

Finding the Fourth Proportional to 19,000.50, 28,485.40 and 7,915.53

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Solution

The fourth proportional to 19,000.50, 28,485.40 and 7,915.53 is: 11,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.50 : 28,485.40 = 7,915.53 : x
  2. Step 2: Convert to fraction form
    19,000.50/28,485.40 = 7,915.53/x
  3. Step 3: Cross multiply
    19,000.50x = 28,485.40 × 7,915.53
  4. Step 4: Simplify right side
    19,000.50x = 225,477,038.26
  5. Step 5: Solve for x
    x = 225,477,038.26/19,000.50
  6. Step 6: Final answer
    x = 11,866.90

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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.