Home / 21,276,085.60-31,893,392.40-12,168,834.40

Finding the Fourth Proportional to 21,276,085.60, 31,893,392.40 and 12,168,834.40

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Solution

The fourth proportional to 21,276,085.60, 31,893,392.40 and 12,168,834.40 is: 18,241,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,085.60 : 31,893,392.40 = 12,168,834.40 : x
  2. Step 2: Convert to fraction form
    21,276,085.60/31,893,392.40 = 12,168,834.40/x
  3. Step 3: Cross multiply
    21,276,085.60x = 31,893,392.40 × 12,168,834.40
  4. Step 4: Simplify right side
    21,276,085.60x = 388,105,410,569,818.56
  5. Step 5: Solve for x
    x = 388,105,410,569,818.56/21,276,085.60
  6. Step 6: Final answer
    x = 18,241,391.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.