Home / 39,419.30-59,138.40-13,124.28

Finding the Fourth Proportional to 39,419.30, 59,138.40 and 13,124.28

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Solution

The fourth proportional to 39,419.30, 59,138.40 and 13,124.28 is: 19,689.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,419.30 : 59,138.40 = 13,124.28 : x
  2. Step 2: Convert to fraction form
    39,419.30/59,138.40 = 13,124.28/x
  3. Step 3: Cross multiply
    39,419.30x = 59,138.40 × 13,124.28
  4. Step 4: Simplify right side
    39,419.30x = 776,148,920.35
  5. Step 5: Solve for x
    x = 776,148,920.35/39,419.30
  6. Step 6: Final answer
    x = 19,689.57

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1.5x scale

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.