Home / 18,805,809.40-28,208,714.10-12,087,345.40

Finding the Fourth Proportional to 18,805,809.40, 28,208,714.10 and 12,087,345.40

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Solution

The fourth proportional to 18,805,809.40, 28,208,714.10 and 12,087,345.40 is: 18,131,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805,809.40 : 28,208,714.10 = 12,087,345.40 : x
  2. Step 2: Convert to fraction form
    18,805,809.40/28,208,714.10 = 12,087,345.40/x
  3. Step 3: Cross multiply
    18,805,809.40x = 28,208,714.10 × 12,087,345.40
  4. Step 4: Simplify right side
    18,805,809.40x = 340,968,470,616,550.19
  5. Step 5: Solve for x
    x = 340,968,470,616,550.19/18,805,809.40
  6. Step 6: Final answer
    x = 18,131,018.10

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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.