Home / 21,069,693.40-31,604,580.76-8,121,941.32

Finding the Fourth Proportional to 21,069,693.40, 31,604,580.76 and 8,121,941.32

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Solution

The fourth proportional to 21,069,693.40, 31,604,580.76 and 8,121,941.32 is: 12,182,927.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,693.40 : 31,604,580.76 = 8,121,941.32 : x
  2. Step 2: Convert to fraction form
    21,069,693.40/31,604,580.76 = 8,121,941.32/x
  3. Step 3: Cross multiply
    21,069,693.40x = 31,604,580.76 × 8,121,941.32
  4. Step 4: Simplify right side
    21,069,693.40x = 256,690,550,276,604.69
  5. Step 5: Solve for x
    x = 256,690,550,276,604.69/21,069,693.40
  6. Step 6: Final answer
    x = 12,182,927.65

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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.