Home / 12,459,981.60-18,689,972.40-7,652,080.80

Finding the Fourth Proportional to 12,459,981.60, 18,689,972.40 and 7,652,080.80

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Solution

The fourth proportional to 12,459,981.60, 18,689,972.40 and 7,652,080.80 is: 11,478,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,981.60 : 18,689,972.40 = 7,652,080.80 : x
  2. Step 2: Convert to fraction form
    12,459,981.60/18,689,972.40 = 7,652,080.80/x
  3. Step 3: Cross multiply
    12,459,981.60x = 18,689,972.40 × 7,652,080.80
  4. Step 4: Simplify right side
    12,459,981.60x = 143,017,178,954,569.91
  5. Step 5: Solve for x
    x = 143,017,178,954,569.91/12,459,981.60
  6. Step 6: Final answer
    x = 11,478,121.20

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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.