Home / 20,822,278.55-28,789,596-18,236,547.45

Finding the Fourth Proportional to 20,822,278.55, 28,789,596 and 18,236,547.45

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Solution

The fourth proportional to 20,822,278.55, 28,789,596 and 18,236,547.45 is: 25,214,475.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822,278.55 : 28,789,596 = 18,236,547.45 : x
  2. Step 2: Convert to fraction form
    20,822,278.55/28,789,596 = 18,236,547.45/x
  3. Step 3: Cross multiply
    20,822,278.55x = 28,789,596 × 18,236,547.45
  4. Step 4: Simplify right side
    20,822,278.55x = 525,022,833,520,330.19
  5. Step 5: Solve for x
    x = 525,022,833,520,330.19/20,822,278.55
  6. Step 6: Final answer
    x = 25,214,475.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.