Home / 20,242,243.40-30,363,365.10-18,289,689.80

Finding the Fourth Proportional to 20,242,243.40, 30,363,365.10 and 18,289,689.80

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Solution

The fourth proportional to 20,242,243.40, 30,363,365.10 and 18,289,689.80 is: 27,434,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242,243.40 : 30,363,365.10 = 18,289,689.80 : x
  2. Step 2: Convert to fraction form
    20,242,243.40/30,363,365.10 = 18,289,689.80/x
  3. Step 3: Cross multiply
    20,242,243.40x = 30,363,365.10 × 18,289,689.80
  4. Step 4: Simplify right side
    20,242,243.40x = 555,336,528,963,146
  5. Step 5: Solve for x
    x = 555,336,528,963,146/20,242,243.40
  6. Step 6: Final answer
    x = 27,434,534.70

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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.