Home / 28,685,901-39,586,543.38-15,808,845

Finding the Fourth Proportional to 28,685,901, 39,586,543.38 and 15,808,845

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Solution

The fourth proportional to 28,685,901, 39,586,543.38 and 15,808,845 is: 21,816,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685,901 : 39,586,543.38 = 15,808,845 : x
  2. Step 2: Convert to fraction form
    28,685,901/39,586,543.38 = 15,808,845/x
  3. Step 3: Cross multiply
    28,685,901x = 39,586,543.38 × 15,808,845
  4. Step 4: Simplify right side
    28,685,901x = 625,817,528,380,196.12
  5. Step 5: Solve for x
    x = 625,817,528,380,196.12/28,685,901
  6. Step 6: Final answer
    x = 21,816,206.10

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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.