Home / 30,545.78-45,835.47-12,789.16

Finding the Fourth Proportional to 30,545.78, 45,835.47 and 12,789.16

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Solution

The fourth proportional to 30,545.78, 45,835.47 and 12,789.16 is: 19,190.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,545.78 : 45,835.47 = 12,789.16 : x
  2. Step 2: Convert to fraction form
    30,545.78/45,835.47 = 12,789.16/x
  3. Step 3: Cross multiply
    30,545.78x = 45,835.47 × 12,789.16
  4. Step 4: Simplify right side
    30,545.78x = 586,197,044.92
  5. Step 5: Solve for x
    x = 586,197,044.92/30,545.78
  6. Step 6: Final answer
    x = 19,190.77

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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.