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Finding the Fourth Proportional to 21,985,718.40, 32,978,577.60 and 16,317,014.40

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Solution

The fourth proportional to 21,985,718.40, 32,978,577.60 and 16,317,014.40 is: 24,475,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985,718.40 : 32,978,577.60 = 16,317,014.40 : x
  2. Step 2: Convert to fraction form
    21,985,718.40/32,978,577.60 = 16,317,014.40/x
  3. Step 3: Cross multiply
    21,985,718.40x = 32,978,577.60 × 16,317,014.40
  4. Step 4: Simplify right side
    21,985,718.40x = 538,111,925,590,717.50
  5. Step 5: Solve for x
    x = 538,111,925,590,717.50/21,985,718.40
  6. Step 6: Final answer
    x = 24,475,521.60

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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.