Home / 20,429,290.70-28,192,187.75-11,136,655.71

Finding the Fourth Proportional to 20,429,290.70, 28,192,187.75 and 11,136,655.71

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Solution

The fourth proportional to 20,429,290.70, 28,192,187.75 and 11,136,655.71 is: 15,368,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429,290.70 : 28,192,187.75 = 11,136,655.71 : x
  2. Step 2: Convert to fraction form
    20,429,290.70/28,192,187.75 = 11,136,655.71/x
  3. Step 3: Cross multiply
    20,429,290.70x = 28,192,187.75 × 11,136,655.71
  4. Step 4: Simplify right side
    20,429,290.70x = 313,966,688,627,746.31
  5. Step 5: Solve for x
    x = 313,966,688,627,746.31/20,429,290.70
  6. Step 6: Final answer
    x = 15,368,457.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.