Home / 20,111,770.40-30,167,655.60-18,537,130.40

Finding the Fourth Proportional to 20,111,770.40, 30,167,655.60 and 18,537,130.40

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Solution

The fourth proportional to 20,111,770.40, 30,167,655.60 and 18,537,130.40 is: 27,805,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,770.40 : 30,167,655.60 = 18,537,130.40 : x
  2. Step 2: Convert to fraction form
    20,111,770.40/30,167,655.60 = 18,537,130.40/x
  3. Step 3: Cross multiply
    20,111,770.40x = 30,167,655.60 × 18,537,130.40
  4. Step 4: Simplify right side
    20,111,770.40x = 559,221,765,719,490.25
  5. Step 5: Solve for x
    x = 559,221,765,719,490.25/20,111,770.40
  6. Step 6: Final answer
    x = 27,805,695.60

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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.