Home / 42,718.59-64,078.92-13,136.67

Finding the Fourth Proportional to 42,718.59, 64,078.92 and 13,136.67

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Solution

The fourth proportional to 42,718.59, 64,078.92 and 13,136.67 is: 19,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,718.59 : 64,078.92 = 13,136.67 : x
  2. Step 2: Convert to fraction form
    42,718.59/64,078.92 = 13,136.67/x
  3. Step 3: Cross multiply
    42,718.59x = 64,078.92 × 13,136.67
  4. Step 4: Simplify right side
    42,718.59x = 841,783,626.00
  5. Step 5: Solve for x
    x = 841,783,626.00/42,718.59
  6. Step 6: Final answer
    x = 19,705.32

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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.