Home / 20,736,136.80-31,104,205.20-11,666,210.40

Finding the Fourth Proportional to 20,736,136.80, 31,104,205.20 and 11,666,210.40

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Solution

The fourth proportional to 20,736,136.80, 31,104,205.20 and 11,666,210.40 is: 17,499,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,136.80 : 31,104,205.20 = 11,666,210.40 : x
  2. Step 2: Convert to fraction form
    20,736,136.80/31,104,205.20 = 11,666,210.40/x
  3. Step 3: Cross multiply
    20,736,136.80x = 31,104,205.20 × 11,666,210.40
  4. Step 4: Simplify right side
    20,736,136.80x = 362,868,202,187,974.06
  5. Step 5: Solve for x
    x = 362,868,202,187,974.06/20,736,136.80
  6. Step 6: Final answer
    x = 17,499,315.60

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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.