Home / 13,280,687.40-19,921,031.10-12,146,946.60

Finding the Fourth Proportional to 13,280,687.40, 19,921,031.10 and 12,146,946.60

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Solution

The fourth proportional to 13,280,687.40, 19,921,031.10 and 12,146,946.60 is: 18,220,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280,687.40 : 19,921,031.10 = 12,146,946.60 : x
  2. Step 2: Convert to fraction form
    13,280,687.40/19,921,031.10 = 12,146,946.60/x
  3. Step 3: Cross multiply
    13,280,687.40x = 19,921,031.10 × 12,146,946.60
  4. Step 4: Simplify right side
    13,280,687.40x = 241,979,700,988,639.28
  5. Step 5: Solve for x
    x = 241,979,700,988,639.28/13,280,687.40
  6. Step 6: Final answer
    x = 18,220,419.90

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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.