Home / 20,242,011.90-30,363,017.85-18,289,458.30

Finding the Fourth Proportional to 20,242,011.90, 30,363,017.85 and 18,289,458.30

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Solution

The fourth proportional to 20,242,011.90, 30,363,017.85 and 18,289,458.30 is: 27,434,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242,011.90 : 30,363,017.85 = 18,289,458.30 : x
  2. Step 2: Convert to fraction form
    20,242,011.90/30,363,017.85 = 18,289,458.30/x
  3. Step 3: Cross multiply
    20,242,011.90x = 30,363,017.85 × 18,289,458.30
  4. Step 4: Simplify right side
    20,242,011.90x = 555,323,148,829,730.69
  5. Step 5: Solve for x
    x = 555,323,148,829,730.69/20,242,011.90
  6. Step 6: Final answer
    x = 27,434,187.45

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Similar ratio
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1.5x scale

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.