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Finding the Fourth Proportional to 19,269.61, 28,904.27 and 9,912.25

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Solution

The fourth proportional to 19,269.61, 28,904.27 and 9,912.25 is: 14,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,269.61 : 28,904.27 = 9,912.25 : x
  2. Step 2: Convert to fraction form
    19,269.61/28,904.27 = 9,912.25/x
  3. Step 3: Cross multiply
    19,269.61x = 28,904.27 × 9,912.25
  4. Step 4: Simplify right side
    19,269.61x = 286,506,300.75
  5. Step 5: Solve for x
    x = 286,506,300.75/19,269.61
  6. Step 6: Final answer
    x = 14,868.30

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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.