Home / 15,465.14-21,303.71-13,189.07

Finding the Fourth Proportional to 15,465.14, 21,303.71 and 13,189.07

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Solution

The fourth proportional to 15,465.14, 21,303.71 and 13,189.07 is: 18,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.14 : 21,303.71 = 13,189.07 : x
  2. Step 2: Convert to fraction form
    15,465.14/21,303.71 = 13,189.07/x
  3. Step 3: Cross multiply
    15,465.14x = 21,303.71 × 13,189.07
  4. Step 4: Simplify right side
    15,465.14x = 280,976,159.22
  5. Step 5: Solve for x
    x = 280,976,159.22/15,465.14
  6. Step 6: Final answer
    x = 18,168.36

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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.