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Finding the Fourth Proportional to 28,069.84, 42,078.84 and 10,526.32

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Solution

The fourth proportional to 28,069.84, 42,078.84 and 10,526.32 is: 15,779.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.84 : 42,078.84 = 10,526.32 : x
  2. Step 2: Convert to fraction form
    28,069.84/42,078.84 = 10,526.32/x
  3. Step 3: Cross multiply
    28,069.84x = 42,078.84 × 10,526.32
  4. Step 4: Simplify right side
    28,069.84x = 442,935,335.07
  5. Step 5: Solve for x
    x = 442,935,335.07/28,069.84
  6. Step 6: Final answer
    x = 15,779.76

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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.