Home / 39,990.81-59,899.95-18,899.02

Finding the Fourth Proportional to 39,990.81, 59,899.95 and 18,899.02

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Solution

The fourth proportional to 39,990.81, 59,899.95 and 18,899.02 is: 28,307.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.81 : 59,899.95 = 18,899.02 : x
  2. Step 2: Convert to fraction form
    39,990.81/59,899.95 = 18,899.02/x
  3. Step 3: Cross multiply
    39,990.81x = 59,899.95 × 18,899.02
  4. Step 4: Simplify right side
    39,990.81x = 1,132,050,203.30
  5. Step 5: Solve for x
    x = 1,132,050,203.30/39,990.81
  6. Step 6: Final answer
    x = 28,307.76

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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.