Home / 28,186,946-38,898,024.36-15,309,890

Finding the Fourth Proportional to 28,186,946, 38,898,024.36 and 15,309,890

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Solution

The fourth proportional to 28,186,946, 38,898,024.36 and 15,309,890 is: 21,127,669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186,946 : 38,898,024.36 = 15,309,890 : x
  2. Step 2: Convert to fraction form
    28,186,946/38,898,024.36 = 15,309,890/x
  3. Step 3: Cross multiply
    28,186,946x = 38,898,024.36 × 15,309,890
  4. Step 4: Simplify right side
    28,186,946x = 595,524,474,168,920.38
  5. Step 5: Solve for x
    x = 595,524,474,168,920.38/28,186,946
  6. Step 6: Final answer
    x = 21,127,669.32

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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.