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Finding the Fourth Proportional to 21,021,801.60, 31,532,702.40 and 21,021,801.60

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Solution

The fourth proportional to 21,021,801.60, 31,532,702.40 and 21,021,801.60 is: 31,532,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021,801.60 : 31,532,702.40 = 21,021,801.60 : x
  2. Step 2: Convert to fraction form
    21,021,801.60/31,532,702.40 = 21,021,801.60/x
  3. Step 3: Cross multiply
    21,021,801.60x = 31,532,702.40 × 21,021,801.60
  4. Step 4: Simplify right side
    21,021,801.60x = 662,874,213,764,643.88
  5. Step 5: Solve for x
    x = 662,874,213,764,643.88/21,021,801.60
  6. Step 6: Final answer
    x = 31,532,702.40

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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.