Home / 13,423.68-18,533.95-8,390.16

Finding the Fourth Proportional to 13,423.68, 18,533.95 and 8,390.16

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Solution

The fourth proportional to 13,423.68, 18,533.95 and 8,390.16 is: 11,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.68 : 18,533.95 = 8,390.16 : x
  2. Step 2: Convert to fraction form
    13,423.68/18,533.95 = 8,390.16/x
  3. Step 3: Cross multiply
    13,423.68x = 18,533.95 × 8,390.16
  4. Step 4: Simplify right side
    13,423.68x = 155,502,805.93
  5. Step 5: Solve for x
    x = 155,502,805.93/13,423.68
  6. Step 6: Final answer
    x = 11,584.22

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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.