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Finding the Fourth Proportional to 28,341.84, 42,491.60 and 19,551.68

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Solution

The fourth proportional to 28,341.84, 42,491.60 and 19,551.68 is: 29,312.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.84 : 42,491.60 = 19,551.68 : x
  2. Step 2: Convert to fraction form
    28,341.84/42,491.60 = 19,551.68/x
  3. Step 3: Cross multiply
    28,341.84x = 42,491.60 × 19,551.68
  4. Step 4: Simplify right side
    28,341.84x = 830,782,165.89
  5. Step 5: Solve for x
    x = 830,782,165.89/28,341.84
  6. Step 6: Final answer
    x = 29,312.92

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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.