Home / 20,082,281.31-27,724,928.75-15,363,799.45

Finding the Fourth Proportional to 20,082,281.31, 27,724,928.75 and 15,363,799.45

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Solution

The fourth proportional to 20,082,281.31, 27,724,928.75 and 15,363,799.45 is: 21,210,749.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082,281.31 : 27,724,928.75 = 15,363,799.45 : x
  2. Step 2: Convert to fraction form
    20,082,281.31/27,724,928.75 = 15,363,799.45/x
  3. Step 3: Cross multiply
    20,082,281.31x = 27,724,928.75 × 15,363,799.45
  4. Step 4: Simplify right side
    20,082,281.31x = 425,960,245,078,443.50
  5. Step 5: Solve for x
    x = 425,960,245,078,443.50/20,082,281.31
  6. Step 6: Final answer
    x = 21,210,749.84

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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.