Home / 18,139,280.32-25,032,206.84-9,990,518.32

Finding the Fourth Proportional to 18,139,280.32, 25,032,206.84 and 9,990,518.32

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Solution

The fourth proportional to 18,139,280.32, 25,032,206.84 and 9,990,518.32 is: 13,786,915.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,280.32 : 25,032,206.84 = 9,990,518.32 : x
  2. Step 2: Convert to fraction form
    18,139,280.32/25,032,206.84 = 9,990,518.32/x
  3. Step 3: Cross multiply
    18,139,280.32x = 25,032,206.84 × 9,990,518.32
  4. Step 4: Simplify right side
    18,139,280.32x = 250,084,721,025,049.31
  5. Step 5: Solve for x
    x = 250,084,721,025,049.31/18,139,280.32
  6. Step 6: Final answer
    x = 13,786,915.28

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1.5x scale

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.