Home / 18,678,843.20-28,018,264.80-6,561,988.40

Finding the Fourth Proportional to 18,678,843.20, 28,018,264.80 and 6,561,988.40

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Solution

The fourth proportional to 18,678,843.20, 28,018,264.80 and 6,561,988.40 is: 9,842,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,843.20 : 28,018,264.80 = 6,561,988.40 : x
  2. Step 2: Convert to fraction form
    18,678,843.20/28,018,264.80 = 6,561,988.40/x
  3. Step 3: Cross multiply
    18,678,843.20x = 28,018,264.80 × 6,561,988.40
  4. Step 4: Simplify right side
    18,678,843.20x = 183,855,528,605,728.34
  5. Step 5: Solve for x
    x = 183,855,528,605,728.34/18,678,843.20
  6. Step 6: Final answer
    x = 9,842,982.60

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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.