Home / 39,275.42-58,922.86-12,980.40

Finding the Fourth Proportional to 39,275.42, 58,922.86 and 12,980.40

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Solution

The fourth proportional to 39,275.42, 58,922.86 and 12,980.40 is: 19,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,275.42 : 58,922.86 = 12,980.40 : x
  2. Step 2: Convert to fraction form
    39,275.42/58,922.86 = 12,980.40/x
  3. Step 3: Cross multiply
    39,275.42x = 58,922.86 × 12,980.40
  4. Step 4: Simplify right side
    39,275.42x = 764,842,291.94
  5. Step 5: Solve for x
    x = 764,842,291.94/39,275.42
  6. Step 6: Final answer
    x = 19,473.82

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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.