Home / 28,392,981.60-42,589,472.40-20,330,824.80

Finding the Fourth Proportional to 28,392,981.60, 42,589,472.40 and 20,330,824.80

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Solution

The fourth proportional to 28,392,981.60, 42,589,472.40 and 20,330,824.80 is: 30,496,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392,981.60 : 42,589,472.40 = 20,330,824.80 : x
  2. Step 2: Convert to fraction form
    28,392,981.60/42,589,472.40 = 20,330,824.80/x
  3. Step 3: Cross multiply
    28,392,981.60x = 42,589,472.40 × 20,330,824.80
  4. Step 4: Simplify right side
    28,392,981.60x = 865,879,101,688,835.50
  5. Step 5: Solve for x
    x = 865,879,101,688,835.50/28,392,981.60
  6. Step 6: Final answer
    x = 30,496,237.20

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1.5x scale

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.