Home / 28,520.84-42,788.56-11,875.36

Finding the Fourth Proportional to 28,520.84, 42,788.56 and 11,875.36

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Solution

The fourth proportional to 28,520.84, 42,788.56 and 11,875.36 is: 17,816.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.84 : 42,788.56 = 11,875.36 : x
  2. Step 2: Convert to fraction form
    28,520.84/42,788.56 = 11,875.36/x
  3. Step 3: Cross multiply
    28,520.84x = 42,788.56 × 11,875.36
  4. Step 4: Simplify right side
    28,520.84x = 508,129,553.88
  5. Step 5: Solve for x
    x = 508,129,553.88/28,520.84
  6. Step 6: Final answer
    x = 17,816.08

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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.