Home / 19,145.65-28,693.52-9,777.78

Finding the Fourth Proportional to 19,145.65, 28,693.52 and 9,777.78

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Solution

The fourth proportional to 19,145.65, 28,693.52 and 9,777.78 is: 14,653.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.65 : 28,693.52 = 9,777.78 : x
  2. Step 2: Convert to fraction form
    19,145.65/28,693.52 = 9,777.78/x
  3. Step 3: Cross multiply
    19,145.65x = 28,693.52 × 9,777.78
  4. Step 4: Simplify right side
    19,145.65x = 280,558,925.99
  5. Step 5: Solve for x
    x = 280,558,925.99/19,145.65
  6. Step 6: Final answer
    x = 14,653.93

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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.