Home / 40,038.83-60,021.10-18,988.72

Finding the Fourth Proportional to 40,038.83, 60,021.10 and 18,988.72

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Solution

The fourth proportional to 40,038.83, 60,021.10 and 18,988.72 is: 28,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,038.83 : 60,021.10 = 18,988.72 : x
  2. Step 2: Convert to fraction form
    40,038.83/60,021.10 = 18,988.72/x
  3. Step 3: Cross multiply
    40,038.83x = 60,021.10 × 18,988.72
  4. Step 4: Simplify right side
    40,038.83x = 1,139,723,561.89
  5. Step 5: Solve for x
    x = 1,139,723,561.89/40,038.83
  6. Step 6: Final answer
    x = 28,465.46

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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.