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Finding the Fourth Proportional to 19,006.90, 28,510.20 and 4,966.90

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Solution

The fourth proportional to 19,006.90, 28,510.20 and 4,966.90 is: 7,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,006.90 : 28,510.20 = 4,966.90 : x
  2. Step 2: Convert to fraction form
    19,006.90/28,510.20 = 4,966.90/x
  3. Step 3: Cross multiply
    19,006.90x = 28,510.20 × 4,966.90
  4. Step 4: Simplify right side
    19,006.90x = 141,607,312.38
  5. Step 5: Solve for x
    x = 141,607,312.38/19,006.90
  6. Step 6: Final answer
    x = 7,450.31

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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.