Home / 20,688,521.13-28,550,157.04-11,991,738.24

Finding the Fourth Proportional to 20,688,521.13, 28,550,157.04 and 11,991,738.24

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Solution

The fourth proportional to 20,688,521.13, 28,550,157.04 and 11,991,738.24 is: 16,548,597.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,521.13 : 28,550,157.04 = 11,991,738.24 : x
  2. Step 2: Convert to fraction form
    20,688,521.13/28,550,157.04 = 11,991,738.24/x
  3. Step 3: Cross multiply
    20,688,521.13x = 28,550,157.04 × 11,991,738.24
  4. Step 4: Simplify right side
    20,688,521.13x = 342,366,009,934,573.19
  5. Step 5: Solve for x
    x = 342,366,009,934,573.19/20,688,521.13
  6. Step 6: Final answer
    x = 16,548,597.54

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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.