Home / 39,442.72-59,151.30-13,140.40

Finding the Fourth Proportional to 39,442.72, 59,151.30 and 13,140.40

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Solution

The fourth proportional to 39,442.72, 59,151.30 and 13,140.40 is: 19,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.72 : 59,151.30 = 13,140.40 : x
  2. Step 2: Convert to fraction form
    39,442.72/59,151.30 = 13,140.40/x
  3. Step 3: Cross multiply
    39,442.72x = 59,151.30 × 13,140.40
  4. Step 4: Simplify right side
    39,442.72x = 777,271,742.52
  5. Step 5: Solve for x
    x = 777,271,742.52/39,442.72
  6. Step 6: Final answer
    x = 19,706.34

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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.