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Finding the Fourth Proportional to 19,007.25, 28,510.98 and 5,156.25

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Solution

The fourth proportional to 19,007.25, 28,510.98 and 5,156.25 is: 7,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.25 : 28,510.98 = 5,156.25 : x
  2. Step 2: Convert to fraction form
    19,007.25/28,510.98 = 5,156.25/x
  3. Step 3: Cross multiply
    19,007.25x = 28,510.98 × 5,156.25
  4. Step 4: Simplify right side
    19,007.25x = 147,009,740.63
  5. Step 5: Solve for x
    x = 147,009,740.63/19,007.25
  6. Step 6: Final answer
    x = 7,734.40

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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.