Home / 20,829,014-31,248,509.28-8,691,725.76

Finding the Fourth Proportional to 20,829,014, 31,248,509.28 and 8,691,725.76

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Solution

The fourth proportional to 20,829,014, 31,248,509.28 and 8,691,725.76 is: 13,039,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,014 : 31,248,509.28 = 8,691,725.76 : x
  2. Step 2: Convert to fraction form
    20,829,014/31,248,509.28 = 8,691,725.76/x
  3. Step 3: Cross multiply
    20,829,014x = 31,248,509.28 × 8,691,725.76
  4. Step 4: Simplify right side
    20,829,014x = 271,603,473,070,575.06
  5. Step 5: Solve for x
    x = 271,603,473,070,575.06/20,829,014
  6. Step 6: Final answer
    x = 13,039,670.20

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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.