Home / 15,369.80-21,210.32-8,655.48

Finding the Fourth Proportional to 15,369.80, 21,210.32 and 8,655.48

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Solution

The fourth proportional to 15,369.80, 21,210.32 and 8,655.48 is: 11,944.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.80 : 21,210.32 = 8,655.48 : x
  2. Step 2: Convert to fraction form
    15,369.80/21,210.32 = 8,655.48/x
  3. Step 3: Cross multiply
    15,369.80x = 21,210.32 × 8,655.48
  4. Step 4: Simplify right side
    15,369.80x = 183,585,522.19
  5. Step 5: Solve for x
    x = 183,585,522.19/15,369.80
  6. Step 6: Final answer
    x = 11,944.57

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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.