Home / 21,000,479.40-31,500,719.10-18,848,143.35

Finding the Fourth Proportional to 21,000,479.40, 31,500,719.10 and 18,848,143.35

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Solution

The fourth proportional to 21,000,479.40, 31,500,719.10 and 18,848,143.35 is: 28,272,215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,479.40 : 31,500,719.10 = 18,848,143.35 : x
  2. Step 2: Convert to fraction form
    21,000,479.40/31,500,719.10 = 18,848,143.35/x
  3. Step 3: Cross multiply
    21,000,479.40x = 31,500,719.10 × 18,848,143.35
  4. Step 4: Simplify right side
    21,000,479.40x = 593,730,069,224,883
  5. Step 5: Solve for x
    x = 593,730,069,224,883/21,000,479.40
  6. Step 6: Final answer
    x = 28,272,215.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.