Home / 20,634,354.78-28,473,148.71-11,931,210.54

Finding the Fourth Proportional to 20,634,354.78, 28,473,148.71 and 11,931,210.54

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Solution

The fourth proportional to 20,634,354.78, 28,473,148.71 and 11,931,210.54 is: 16,463,763.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634,354.78 : 28,473,148.71 = 11,931,210.54 : x
  2. Step 2: Convert to fraction form
    20,634,354.78/28,473,148.71 = 11,931,210.54/x
  3. Step 3: Cross multiply
    20,634,354.78x = 28,473,148.71 × 11,931,210.54
  4. Step 4: Simplify right side
    20,634,354.78x = 339,719,131,995,739.38
  5. Step 5: Solve for x
    x = 339,719,131,995,739.38/20,634,354.78
  6. Step 6: Final answer
    x = 16,463,763.25

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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.