Home / 18,678,838.40-28,018,257.60-7,315,510.40

Finding the Fourth Proportional to 18,678,838.40, 28,018,257.60 and 7,315,510.40

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Solution

The fourth proportional to 18,678,838.40, 28,018,257.60 and 7,315,510.40 is: 10,973,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,838.40 : 28,018,257.60 = 7,315,510.40 : x
  2. Step 2: Convert to fraction form
    18,678,838.40/28,018,257.60 = 7,315,510.40/x
  3. Step 3: Cross multiply
    18,678,838.40x = 28,018,257.60 × 7,315,510.40
  4. Step 4: Simplify right side
    18,678,838.40x = 204,967,854,862,679.06
  5. Step 5: Solve for x
    x = 204,967,854,862,679.06/18,678,838.40
  6. Step 6: Final answer
    x = 10,973,265.60

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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.