Home / 25,455.95-35,138.54-15,384.77

Finding the Fourth Proportional to 25,455.95, 35,138.54 and 15,384.77

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Solution

The fourth proportional to 25,455.95, 35,138.54 and 15,384.77 is: 21,236.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,455.95 : 35,138.54 = 15,384.77 : x
  2. Step 2: Convert to fraction form
    25,455.95/35,138.54 = 15,384.77/x
  3. Step 3: Cross multiply
    25,455.95x = 35,138.54 × 15,384.77
  4. Step 4: Simplify right side
    25,455.95x = 540,598,356.04
  5. Step 5: Solve for x
    x = 540,598,356.04/25,455.95
  6. Step 6: Final answer
    x = 21,236.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.