Home / 38,639,355.72-53,323,510.86-21,235,384.68

Finding the Fourth Proportional to 38,639,355.72, 53,323,510.86 and 21,235,384.68

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Solution

The fourth proportional to 38,639,355.72, 53,323,510.86 and 21,235,384.68 is: 29,305,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639,355.72 : 53,323,510.86 = 21,235,384.68 : x
  2. Step 2: Convert to fraction form
    38,639,355.72/53,323,510.86 = 21,235,384.68/x
  3. Step 3: Cross multiply
    38,639,355.72x = 53,323,510.86 × 21,235,384.68
  4. Step 4: Simplify right side
    38,639,355.72x = 1,132,345,265,600,257.50
  5. Step 5: Solve for x
    x = 1,132,345,265,600,257.50/38,639,355.72
  6. Step 6: Final answer
    x = 29,305,490.33

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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.