Home / 12,528.95-18,787.55-7,265.45

Finding the Fourth Proportional to 12,528.95, 18,787.55 and 7,265.45

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Solution

The fourth proportional to 12,528.95, 18,787.55 and 7,265.45 is: 10,894.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.95 : 18,787.55 = 7,265.45 : x
  2. Step 2: Convert to fraction form
    12,528.95/18,787.55 = 7,265.45/x
  3. Step 3: Cross multiply
    12,528.95x = 18,787.55 × 7,265.45
  4. Step 4: Simplify right side
    12,528.95x = 136,499,929.37
  5. Step 5: Solve for x
    x = 136,499,929.37/12,528.95
  6. Step 6: Final answer
    x = 10,894.77

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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.