Home / 13,146,853.70-19,720,280.55-7,478,149.70

Finding the Fourth Proportional to 13,146,853.70, 19,720,280.55 and 7,478,149.70

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Solution

The fourth proportional to 13,146,853.70, 19,720,280.55 and 7,478,149.70 is: 11,217,224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146,853.70 : 19,720,280.55 = 7,478,149.70 : x
  2. Step 2: Convert to fraction form
    13,146,853.70/19,720,280.55 = 7,478,149.70/x
  3. Step 3: Cross multiply
    13,146,853.70x = 19,720,280.55 × 7,478,149.70
  4. Step 4: Simplify right side
    13,146,853.70x = 147,471,210,078,898.34
  5. Step 5: Solve for x
    x = 147,471,210,078,898.34/13,146,853.70
  6. Step 6: Final answer
    x = 11,217,224.55

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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.