Home / 21,143,322.40-31,714,983.60-12,640,266.40

Finding the Fourth Proportional to 21,143,322.40, 31,714,983.60 and 12,640,266.40

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Solution

The fourth proportional to 21,143,322.40, 31,714,983.60 and 12,640,266.40 is: 18,960,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143,322.40 : 31,714,983.60 = 12,640,266.40 : x
  2. Step 2: Convert to fraction form
    21,143,322.40/31,714,983.60 = 12,640,266.40/x
  3. Step 3: Cross multiply
    21,143,322.40x = 31,714,983.60 × 12,640,266.40
  4. Step 4: Simplify right side
    21,143,322.40x = 400,885,841,575,631.06
  5. Step 5: Solve for x
    x = 400,885,841,575,631.06/21,143,322.40
  6. Step 6: Final answer
    x = 18,960,399.60

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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.