Home / 21,063,114.90-31,594,672.35-18,671,630.40

Finding the Fourth Proportional to 21,063,114.90, 31,594,672.35 and 18,671,630.40

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Solution

The fourth proportional to 21,063,114.90, 31,594,672.35 and 18,671,630.40 is: 28,007,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063,114.90 : 31,594,672.35 = 18,671,630.40 : x
  2. Step 2: Convert to fraction form
    21,063,114.90/31,594,672.35 = 18,671,630.40/x
  3. Step 3: Cross multiply
    21,063,114.90x = 31,594,672.35 × 18,671,630.40
  4. Step 4: Simplify right side
    21,063,114.90x = 589,924,044,728,299.38
  5. Step 5: Solve for x
    x = 589,924,044,728,299.38/21,063,114.90
  6. Step 6: Final answer
    x = 28,007,445.60

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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.