Home / 42,740.30-64,119.36-13,156.67

Finding the Fourth Proportional to 42,740.30, 64,119.36 and 13,156.67

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Solution

The fourth proportional to 42,740.30, 64,119.36 and 13,156.67 is: 19,737.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,740.30 : 64,119.36 = 13,156.67 : x
  2. Step 2: Convert to fraction form
    42,740.30/64,119.36 = 13,156.67/x
  3. Step 3: Cross multiply
    42,740.30x = 64,119.36 × 13,156.67
  4. Step 4: Simplify right side
    42,740.30x = 843,597,260.13
  5. Step 5: Solve for x
    x = 843,597,260.13/42,740.30
  6. Step 6: Final answer
    x = 19,737.75

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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.