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Finding the Fourth Proportional to 28,655.42, 42,984.29 and 7,308.68

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Solution

The fourth proportional to 28,655.42, 42,984.29 and 7,308.68 is: 10,963.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,655.42 : 42,984.29 = 7,308.68 : x
  2. Step 2: Convert to fraction form
    28,655.42/42,984.29 = 7,308.68/x
  3. Step 3: Cross multiply
    28,655.42x = 42,984.29 × 7,308.68
  4. Step 4: Simplify right side
    28,655.42x = 314,158,491.55
  5. Step 5: Solve for x
    x = 314,158,491.55/28,655.42
  6. Step 6: Final answer
    x = 10,963.32

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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.