Home / 10,518.99-15,777.95-3,123.51

Finding the Fourth Proportional to 10,518.99, 15,777.95 and 3,123.51

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Solution

The fourth proportional to 10,518.99, 15,777.95 and 3,123.51 is: 4,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.99 : 15,777.95 = 3,123.51 : x
  2. Step 2: Convert to fraction form
    10,518.99/15,777.95 = 3,123.51/x
  3. Step 3: Cross multiply
    10,518.99x = 15,777.95 × 3,123.51
  4. Step 4: Simplify right side
    10,518.99x = 49,282,568.99
  5. Step 5: Solve for x
    x = 49,282,568.99/10,518.99
  6. Step 6: Final answer
    x = 4,685.10

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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.