Home / 13,221.61-18,219.45-9,434.10

Finding the Fourth Proportional to 13,221.61, 18,219.45 and 9,434.10

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Solution

The fourth proportional to 13,221.61, 18,219.45 and 9,434.10 is: 13,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.61 : 18,219.45 = 9,434.10 : x
  2. Step 2: Convert to fraction form
    13,221.61/18,219.45 = 9,434.10/x
  3. Step 3: Cross multiply
    13,221.61x = 18,219.45 × 9,434.10
  4. Step 4: Simplify right side
    13,221.61x = 171,884,113.25
  5. Step 5: Solve for x
    x = 171,884,113.25/13,221.61
  6. Step 6: Final answer
    x = 13,000.24

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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.