Home / 20,111,765.40-30,167,648.10-18,537,125.40

Finding the Fourth Proportional to 20,111,765.40, 30,167,648.10 and 18,537,125.40

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Solution

The fourth proportional to 20,111,765.40, 30,167,648.10 and 18,537,125.40 is: 27,805,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,765.40 : 30,167,648.10 = 18,537,125.40 : x
  2. Step 2: Convert to fraction form
    20,111,765.40/30,167,648.10 = 18,537,125.40/x
  3. Step 3: Cross multiply
    20,111,765.40x = 30,167,648.10 × 18,537,125.40
  4. Step 4: Simplify right side
    20,111,765.40x = 559,221,475,852,771.75
  5. Step 5: Solve for x
    x = 559,221,475,852,771.75/20,111,765.40
  6. Step 6: Final answer
    x = 27,805,688.10

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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.