Home / 12,128,510.40-18,202,273.20-8,461,392.72

Finding the Fourth Proportional to 12,128,510.40, 18,202,273.20 and 8,461,392.72

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Solution

The fourth proportional to 12,128,510.40, 18,202,273.20 and 8,461,392.72 is: 12,698,722.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,510.40 : 18,202,273.20 = 8,461,392.72 : x
  2. Step 2: Convert to fraction form
    12,128,510.40/18,202,273.20 = 8,461,392.72/x
  3. Step 3: Cross multiply
    12,128,510.40x = 18,202,273.20 × 8,461,392.72
  4. Step 4: Simplify right side
    12,128,510.40x = 154,016,581,941,931.12
  5. Step 5: Solve for x
    x = 154,016,581,941,931.12/12,128,510.40
  6. Step 6: Final answer
    x = 12,698,722.01

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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.