Home / 15,445.13-21,298.37-13,214.39

Finding the Fourth Proportional to 15,445.13, 21,298.37 and 13,214.39

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Solution

The fourth proportional to 15,445.13, 21,298.37 and 13,214.39 is: 18,222.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.13 : 21,298.37 = 13,214.39 : x
  2. Step 2: Convert to fraction form
    15,445.13/21,298.37 = 13,214.39/x
  3. Step 3: Cross multiply
    15,445.13x = 21,298.37 × 13,214.39
  4. Step 4: Simplify right side
    15,445.13x = 281,444,901.47
  5. Step 5: Solve for x
    x = 281,444,901.47/15,445.13
  6. Step 6: Final answer
    x = 18,222.24

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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.