Home / 21,260,386.80-31,890,580.20-21,134,415.60

Finding the Fourth Proportional to 21,260,386.80, 31,890,580.20 and 21,134,415.60

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Solution

The fourth proportional to 21,260,386.80, 31,890,580.20 and 21,134,415.60 is: 31,701,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260,386.80 : 31,890,580.20 = 21,134,415.60 : x
  2. Step 2: Convert to fraction form
    21,260,386.80/31,890,580.20 = 21,134,415.60/x
  3. Step 3: Cross multiply
    21,260,386.80x = 31,890,580.20 × 21,134,415.60
  4. Step 4: Simplify right side
    21,260,386.80x = 673,988,775,671,931.12
  5. Step 5: Solve for x
    x = 673,988,775,671,931.12/21,260,386.80
  6. Step 6: Final answer
    x = 31,701,623.40

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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.