Home / 21,018,328.80-31,535,366.40-8,247,998.40

Finding the Fourth Proportional to 21,018,328.80, 31,535,366.40 and 8,247,998.40

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Solution

The fourth proportional to 21,018,328.80, 31,535,366.40 and 8,247,998.40 is: 12,375,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,328.80 : 31,535,366.40 = 8,247,998.40 : x
  2. Step 2: Convert to fraction form
    21,018,328.80/31,535,366.40 = 8,247,998.40/x
  3. Step 3: Cross multiply
    21,018,328.80x = 31,535,366.40 × 8,247,998.40
  4. Step 4: Simplify right side
    21,018,328.80x = 260,103,651,610,613.75
  5. Step 5: Solve for x
    x = 260,103,651,610,613.75/21,018,328.80
  6. Step 6: Final answer
    x = 12,375,087.20

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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.