Home / 39,720.36-59,580.50-10,138.20

Finding the Fourth Proportional to 39,720.36, 59,580.50 and 10,138.20

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Solution

The fourth proportional to 39,720.36, 59,580.50 and 10,138.20 is: 15,207.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.36 : 59,580.50 = 10,138.20 : x
  2. Step 2: Convert to fraction form
    39,720.36/59,580.50 = 10,138.20/x
  3. Step 3: Cross multiply
    39,720.36x = 59,580.50 × 10,138.20
  4. Step 4: Simplify right side
    39,720.36x = 604,039,025.10
  5. Step 5: Solve for x
    x = 604,039,025.10/39,720.36
  6. Step 6: Final answer
    x = 15,207.29

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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.