Home / 28,327.84-42,510.56-18,977.92

Finding the Fourth Proportional to 28,327.84, 42,510.56 and 18,977.92

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Solution

The fourth proportional to 28,327.84, 42,510.56 and 18,977.92 is: 28,479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,327.84 : 42,510.56 = 18,977.92 : x
  2. Step 2: Convert to fraction form
    28,327.84/42,510.56 = 18,977.92/x
  3. Step 3: Cross multiply
    28,327.84x = 42,510.56 × 18,977.92
  4. Step 4: Simplify right side
    28,327.84x = 806,762,006.84
  5. Step 5: Solve for x
    x = 806,762,006.84/28,327.84
  6. Step 6: Final answer
    x = 28,479.47

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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.