Home / 20,390,030.39-28,138,240.35-11,097,667.05

Finding the Fourth Proportional to 20,390,030.39, 28,138,240.35 and 11,097,667.05

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Solution

The fourth proportional to 20,390,030.39, 28,138,240.35 and 11,097,667.05 is: 15,314,779.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,030.39 : 28,138,240.35 = 11,097,667.05 : x
  2. Step 2: Convert to fraction form
    20,390,030.39/28,138,240.35 = 11,097,667.05/x
  3. Step 3: Cross multiply
    20,390,030.39x = 28,138,240.35 × 11,097,667.05
  4. Step 4: Simplify right side
    20,390,030.39x = 312,268,822,777,175.50
  5. Step 5: Solve for x
    x = 312,268,822,777,175.50/20,390,030.39
  6. Step 6: Final answer
    x = 15,314,779.67

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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.