Home / 15,477.80-21,330.18-15,247.40

Finding the Fourth Proportional to 15,477.80, 21,330.18 and 15,247.40

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Solution

The fourth proportional to 15,477.80, 21,330.18 and 15,247.40 is: 21,012.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.80 : 21,330.18 = 15,247.40 : x
  2. Step 2: Convert to fraction form
    15,477.80/21,330.18 = 15,247.40/x
  3. Step 3: Cross multiply
    15,477.80x = 21,330.18 × 15,247.40
  4. Step 4: Simplify right side
    15,477.80x = 325,229,786.53
  5. Step 5: Solve for x
    x = 325,229,786.53/15,477.80
  6. Step 6: Final answer
    x = 21,012.66

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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.