Home / 39,720.61-59,580.88-10,138.45

Finding the Fourth Proportional to 39,720.61, 59,580.88 and 10,138.45

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Solution

The fourth proportional to 39,720.61, 59,580.88 and 10,138.45 is: 15,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720.61 : 59,580.88 = 10,138.45 : x
  2. Step 2: Convert to fraction form
    39,720.61/59,580.88 = 10,138.45/x
  3. Step 3: Cross multiply
    39,720.61x = 59,580.88 × 10,138.45
  4. Step 4: Simplify right side
    39,720.61x = 604,057,772.84
  5. Step 5: Solve for x
    x = 604,057,772.84/39,720.61
  6. Step 6: Final answer
    x = 15,207.67

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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.