Home / 21,262,569.40-31,893,854.10-20,142,825.40

Finding the Fourth Proportional to 21,262,569.40, 31,893,854.10 and 20,142,825.40

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Solution

The fourth proportional to 21,262,569.40, 31,893,854.10 and 20,142,825.40 is: 30,214,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262,569.40 : 31,893,854.10 = 20,142,825.40 : x
  2. Step 2: Convert to fraction form
    21,262,569.40/31,893,854.10 = 20,142,825.40/x
  3. Step 3: Cross multiply
    21,262,569.40x = 31,893,854.10 × 20,142,825.40
  4. Step 4: Simplify right side
    21,262,569.40x = 642,432,334,469,374.12
  5. Step 5: Solve for x
    x = 642,432,334,469,374.12/21,262,569.40
  6. Step 6: Final answer
    x = 30,214,238.10

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1.5x scale

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.