Home / 20,823,708.96-28,736,417.52-11,530,386.72

Finding the Fourth Proportional to 20,823,708.96, 28,736,417.52 and 11,530,386.72

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Solution

The fourth proportional to 20,823,708.96, 28,736,417.52 and 11,530,386.72 is: 15,911,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823,708.96 : 28,736,417.52 = 11,530,386.72 : x
  2. Step 2: Convert to fraction form
    20,823,708.96/28,736,417.52 = 11,530,386.72/x
  3. Step 3: Cross multiply
    20,823,708.96x = 28,736,417.52 × 11,530,386.72
  4. Step 4: Simplify right side
    20,823,708.96x = 331,342,006,952,983.38
  5. Step 5: Solve for x
    x = 331,342,006,952,983.38/20,823,708.96
  6. Step 6: Final answer
    x = 15,911,767.09

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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.