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Finding the Fourth Proportional to 19,137.53, 28,710.95 and 6,655.79

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Solution

The fourth proportional to 19,137.53, 28,710.95 and 6,655.79 is: 9,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.53 : 28,710.95 = 6,655.79 : x
  2. Step 2: Convert to fraction form
    19,137.53/28,710.95 = 6,655.79/x
  3. Step 3: Cross multiply
    19,137.53x = 28,710.95 × 6,655.79
  4. Step 4: Simplify right side
    19,137.53x = 191,094,092.40
  5. Step 5: Solve for x
    x = 191,094,092.40/19,137.53
  6. Step 6: Final answer
    x = 9,985.30

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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.