Home / 15,664,946.40-21,617,688.24-8,788,979.52

Finding the Fourth Proportional to 15,664,946.40, 21,617,688.24 and 8,788,979.52

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Solution

The fourth proportional to 15,664,946.40, 21,617,688.24 and 8,788,979.52 is: 12,128,826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664,946.40 : 21,617,688.24 = 8,788,979.52 : x
  2. Step 2: Convert to fraction form
    15,664,946.40/21,617,688.24 = 8,788,979.52/x
  3. Step 3: Cross multiply
    15,664,946.40x = 21,617,688.24 × 8,788,979.52
  4. Step 4: Simplify right side
    15,664,946.40x = 189,997,419,211,104.81
  5. Step 5: Solve for x
    x = 189,997,419,211,104.81/15,664,946.40
  6. Step 6: Final answer
    x = 12,128,826.64

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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.