Home / 12,998,856.64-17,938,963.18-7,197,638.21

Finding the Fourth Proportional to 12,998,856.64, 17,938,963.18 and 7,197,638.21

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Solution

The fourth proportional to 12,998,856.64, 17,938,963.18 and 7,197,638.21 is: 9,933,040.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998,856.64 : 17,938,963.18 = 7,197,638.21 : x
  2. Step 2: Convert to fraction form
    12,998,856.64/17,938,963.18 = 7,197,638.21/x
  3. Step 3: Cross multiply
    12,998,856.64x = 17,938,963.18 × 7,197,638.21
  4. Step 4: Simplify right side
    12,998,856.64x = 129,118,166,768,271.11
  5. Step 5: Solve for x
    x = 129,118,166,768,271.11/12,998,856.64
  6. Step 6: Final answer
    x = 9,933,040.30

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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.