Home / 20,807,413.40-31,211,120.10-7,345,602.20

Finding the Fourth Proportional to 20,807,413.40, 31,211,120.10 and 7,345,602.20

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Solution

The fourth proportional to 20,807,413.40, 31,211,120.10 and 7,345,602.20 is: 11,018,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,413.40 : 31,211,120.10 = 7,345,602.20 : x
  2. Step 2: Convert to fraction form
    20,807,413.40/31,211,120.10 = 7,345,602.20/x
  3. Step 3: Cross multiply
    20,807,413.40x = 31,211,120.10 × 7,345,602.20
  4. Step 4: Simplify right side
    20,807,413.40x = 229,264,472,471,024.25
  5. Step 5: Solve for x
    x = 229,264,472,471,024.25/20,807,413.40
  6. Step 6: Final answer
    x = 11,018,403.30

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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.