Home / 13,434.23-18,533.49-8,389.70

Finding the Fourth Proportional to 13,434.23, 18,533.49 and 8,389.70

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Solution

The fourth proportional to 13,434.23, 18,533.49 and 8,389.70 is: 11,574.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.23 : 18,533.49 = 8,389.70 : x
  2. Step 2: Convert to fraction form
    13,434.23/18,533.49 = 8,389.70/x
  3. Step 3: Cross multiply
    13,434.23x = 18,533.49 × 8,389.70
  4. Step 4: Simplify right side
    13,434.23x = 155,490,328.39
  5. Step 5: Solve for x
    x = 155,490,328.39/13,434.23
  6. Step 6: Final answer
    x = 11,574.19

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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.