Home / 13,434.23-18,538.31-7,384.91

Finding the Fourth Proportional to 13,434.23, 18,538.31 and 7,384.91

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Solution

The fourth proportional to 13,434.23, 18,538.31 and 7,384.91 is: 10,190.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.23 : 18,538.31 = 7,384.91 : x
  2. Step 2: Convert to fraction form
    13,434.23/18,538.31 = 7,384.91/x
  3. Step 3: Cross multiply
    13,434.23x = 18,538.31 × 7,384.91
  4. Step 4: Simplify right side
    13,434.23x = 136,903,621.29
  5. Step 5: Solve for x
    x = 136,903,621.29/13,434.23
  6. Step 6: Final answer
    x = 10,190.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.