Home / 39,715.84-59,580.62-13,420.76

Finding the Fourth Proportional to 39,715.84, 59,580.62 and 13,420.76

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Solution

The fourth proportional to 39,715.84, 59,580.62 and 13,420.76 is: 20,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,715.84 : 59,580.62 = 13,420.76 : x
  2. Step 2: Convert to fraction form
    39,715.84/59,580.62 = 13,420.76/x
  3. Step 3: Cross multiply
    39,715.84x = 59,580.62 × 13,420.76
  4. Step 4: Simplify right side
    39,715.84x = 799,617,201.67
  5. Step 5: Solve for x
    x = 799,617,201.67/39,715.84
  6. Step 6: Final answer
    x = 20,133.46

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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.