Home / 28,688,421.89-39,588,867.37-15,635,399.87

Finding the Fourth Proportional to 28,688,421.89, 39,588,867.37 and 15,635,399.87

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Solution

The fourth proportional to 28,688,421.89, 39,588,867.37 and 15,635,399.87 is: 21,576,222.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688,421.89 : 39,588,867.37 = 15,635,399.87 : x
  2. Step 2: Convert to fraction form
    28,688,421.89/39,588,867.37 = 15,635,399.87/x
  3. Step 3: Cross multiply
    28,688,421.89x = 39,588,867.37 × 15,635,399.87
  4. Step 4: Simplify right side
    28,688,421.89x = 618,987,771,730,345.12
  5. Step 5: Solve for x
    x = 618,987,771,730,345.12/28,688,421.89
  6. Step 6: Final answer
    x = 21,576,222.43

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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.