Home / 21,078,052.56-29,076,492.51-12,820,640.40

Finding the Fourth Proportional to 21,078,052.56, 29,076,492.51 and 12,820,640.40

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Solution

The fourth proportional to 21,078,052.56, 29,076,492.51 and 12,820,640.40 is: 17,685,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078,052.56 : 29,076,492.51 = 12,820,640.40 : x
  2. Step 2: Convert to fraction form
    21,078,052.56/29,076,492.51 = 12,820,640.40/x
  3. Step 3: Cross multiply
    21,078,052.56x = 29,076,492.51 × 12,820,640.40
  4. Step 4: Simplify right side
    21,078,052.56x = 372,779,254,564,003.44
  5. Step 5: Solve for x
    x = 372,779,254,564,003.44/21,078,052.56
  6. Step 6: Final answer
    x = 17,685,659.22

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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.