Home / 15,189,153.96-20,960,956.08-8,219,826.48

Finding the Fourth Proportional to 15,189,153.96, 20,960,956.08 and 8,219,826.48

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Solution

The fourth proportional to 15,189,153.96, 20,960,956.08 and 8,219,826.48 is: 11,343,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189,153.96 : 20,960,956.08 = 8,219,826.48 : x
  2. Step 2: Convert to fraction form
    15,189,153.96/20,960,956.08 = 8,219,826.48/x
  3. Step 3: Cross multiply
    15,189,153.96x = 20,960,956.08 × 8,219,826.48
  4. Step 4: Simplify right side
    15,189,153.96x = 172,295,421,832,501
  5. Step 5: Solve for x
    x = 172,295,421,832,501/15,189,153.96
  6. Step 6: Final answer
    x = 11,343,319.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.