Home / 18,721,879.10-28,082,818.65-15,698,570.30

Finding the Fourth Proportional to 18,721,879.10, 28,082,818.65 and 15,698,570.30

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Solution

The fourth proportional to 18,721,879.10, 28,082,818.65 and 15,698,570.30 is: 23,547,855.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,879.10 : 28,082,818.65 = 15,698,570.30 : x
  2. Step 2: Convert to fraction form
    18,721,879.10/28,082,818.65 = 15,698,570.30/x
  3. Step 3: Cross multiply
    18,721,879.10x = 28,082,818.65 × 15,698,570.30
  4. Step 4: Simplify right side
    18,721,879.10x = 440,860,102,799,176.06
  5. Step 5: Solve for x
    x = 440,860,102,799,176.06/18,721,879.10
  6. Step 6: Final answer
    x = 23,547,855.45

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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.