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Finding the Fourth Proportional to 30,064.94, 45,097.41 and 18,988.46

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Solution

The fourth proportional to 30,064.94, 45,097.41 and 18,988.46 is: 28,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,064.94 : 45,097.41 = 18,988.46 : x
  2. Step 2: Convert to fraction form
    30,064.94/45,097.41 = 18,988.46/x
  3. Step 3: Cross multiply
    30,064.94x = 45,097.41 × 18,988.46
  4. Step 4: Simplify right side
    30,064.94x = 856,330,140.40
  5. Step 5: Solve for x
    x = 856,330,140.40/30,064.94
  6. Step 6: Final answer
    x = 28,482.69

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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.