Home / 21,240,228.80-29,300,904.60-13,409,446.16

Finding the Fourth Proportional to 21,240,228.80, 29,300,904.60 and 13,409,446.16

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Solution

The fourth proportional to 21,240,228.80, 29,300,904.60 and 13,409,446.16 is: 18,498,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240,228.80 : 29,300,904.60 = 13,409,446.16 : x
  2. Step 2: Convert to fraction form
    21,240,228.80/29,300,904.60 = 13,409,446.16/x
  3. Step 3: Cross multiply
    21,240,228.80x = 29,300,904.60 × 13,409,446.16
  4. Step 4: Simplify right side
    21,240,228.80x = 392,908,902,672,996.38
  5. Step 5: Solve for x
    x = 392,908,902,672,996.38/21,240,228.80
  6. Step 6: Final answer
    x = 18,498,336.64

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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.