Home / 19,107.61-28,630.47-11,689.58

Finding the Fourth Proportional to 19,107.61, 28,630.47 and 11,689.58

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Solution

The fourth proportional to 19,107.61, 28,630.47 and 11,689.58 is: 17,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.61 : 28,630.47 = 11,689.58 : x
  2. Step 2: Convert to fraction form
    19,107.61/28,630.47 = 11,689.58/x
  3. Step 3: Cross multiply
    19,107.61x = 28,630.47 × 11,689.58
  4. Step 4: Simplify right side
    19,107.61x = 334,678,284.91
  5. Step 5: Solve for x
    x = 334,678,284.91/19,107.61
  6. Step 6: Final answer
    x = 17,515.45

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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.