Home / 20,918,715.60-31,360,102.32-7,270,088.70

Finding the Fourth Proportional to 20,918,715.60, 31,360,102.32 and 7,270,088.70

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Solution

The fourth proportional to 20,918,715.60, 31,360,102.32 and 7,270,088.70 is: 10,898,887.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,715.60 : 31,360,102.32 = 7,270,088.70 : x
  2. Step 2: Convert to fraction form
    20,918,715.60/31,360,102.32 = 7,270,088.70/x
  3. Step 3: Cross multiply
    20,918,715.60x = 31,360,102.32 × 7,270,088.70
  4. Step 4: Simplify right side
    20,918,715.60x = 227,990,725,507,475.78
  5. Step 5: Solve for x
    x = 227,990,725,507,475.78/20,918,715.60
  6. Step 6: Final answer
    x = 10,898,887.38

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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.