Home / 28,076,638.40-42,114,957.60-12,960,094.40

Finding the Fourth Proportional to 28,076,638.40, 42,114,957.60 and 12,960,094.40

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Solution

The fourth proportional to 28,076,638.40, 42,114,957.60 and 12,960,094.40 is: 19,440,141.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076,638.40 : 42,114,957.60 = 12,960,094.40 : x
  2. Step 2: Convert to fraction form
    28,076,638.40/42,114,957.60 = 12,960,094.40/x
  3. Step 3: Cross multiply
    28,076,638.40x = 42,114,957.60 × 12,960,094.40
  4. Step 4: Simplify right side
    28,076,638.40x = 545,813,826,147,997.50
  5. Step 5: Solve for x
    x = 545,813,826,147,997.50/28,076,638.40
  6. Step 6: Final answer
    x = 19,440,141.60

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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.