Home / 30,155.68-45,254.64-12,629.92

Finding the Fourth Proportional to 30,155.68, 45,254.64 and 12,629.92

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Solution

The fourth proportional to 30,155.68, 45,254.64 and 12,629.92 is: 18,953.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.68 : 45,254.64 = 12,629.92 : x
  2. Step 2: Convert to fraction form
    30,155.68/45,254.64 = 12,629.92/x
  3. Step 3: Cross multiply
    30,155.68x = 45,254.64 × 12,629.92
  4. Step 4: Simplify right side
    30,155.68x = 571,562,482.83
  5. Step 5: Solve for x
    x = 571,562,482.83/30,155.68
  6. Step 6: Final answer
    x = 18,953.73

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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.