Home / 39,681.64-59,561.34-18,919.72

Finding the Fourth Proportional to 39,681.64, 59,561.34 and 18,919.72

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Solution

The fourth proportional to 39,681.64, 59,561.34 and 18,919.72 is: 28,398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.64 : 59,561.34 = 18,919.72 : x
  2. Step 2: Convert to fraction form
    39,681.64/59,561.34 = 18,919.72/x
  3. Step 3: Cross multiply
    39,681.64x = 59,561.34 × 18,919.72
  4. Step 4: Simplify right side
    39,681.64x = 1,126,883,875.62
  5. Step 5: Solve for x
    x = 1,126,883,875.62/39,681.64
  6. Step 6: Final answer
    x = 28,398.12

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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.