Home / 28,429.65-42,655.47-11,785.41

Finding the Fourth Proportional to 28,429.65, 42,655.47 and 11,785.41

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Solution

The fourth proportional to 28,429.65, 42,655.47 and 11,785.41 is: 17,682.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.65 : 42,655.47 = 11,785.41 : x
  2. Step 2: Convert to fraction form
    28,429.65/42,655.47 = 11,785.41/x
  3. Step 3: Cross multiply
    28,429.65x = 42,655.47 × 11,785.41
  4. Step 4: Simplify right side
    28,429.65x = 502,712,202.69
  5. Step 5: Solve for x
    x = 502,712,202.69/28,429.65
  6. Step 6: Final answer
    x = 17,682.67

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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.