Home / 20,838,430.80-31,257,646.20-5,692,362.30

Finding the Fourth Proportional to 20,838,430.80, 31,257,646.20 and 5,692,362.30

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Solution

The fourth proportional to 20,838,430.80, 31,257,646.20 and 5,692,362.30 is: 8,538,543.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838,430.80 : 31,257,646.20 = 5,692,362.30 : x
  2. Step 2: Convert to fraction form
    20,838,430.80/31,257,646.20 = 5,692,362.30/x
  3. Step 3: Cross multiply
    20,838,430.80x = 31,257,646.20 × 5,692,362.30
  4. Step 4: Simplify right side
    20,838,430.80x = 177,929,846,815,618.25
  5. Step 5: Solve for x
    x = 177,929,846,815,618.25/20,838,430.80
  6. Step 6: Final answer
    x = 8,538,543.45

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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.