Home / 15,113,513.68-20,856,856.12-8,237,980.96

Finding the Fourth Proportional to 15,113,513.68, 20,856,856.12 and 8,237,980.96

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Solution

The fourth proportional to 15,113,513.68, 20,856,856.12 and 8,237,980.96 is: 11,368,526.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113,513.68 : 20,856,856.12 = 8,237,980.96 : x
  2. Step 2: Convert to fraction form
    15,113,513.68/20,856,856.12 = 8,237,980.96/x
  3. Step 3: Cross multiply
    15,113,513.68x = 20,856,856.12 × 8,237,980.96
  4. Step 4: Simplify right side
    15,113,513.68x = 171,818,383,602,019.47
  5. Step 5: Solve for x
    x = 171,818,383,602,019.47/15,113,513.68
  6. Step 6: Final answer
    x = 11,368,526.69

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1.5x scale

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.