Home / 20,745,086.40-28,636,065.12-15,603,296.32

Finding the Fourth Proportional to 20,745,086.40, 28,636,065.12 and 15,603,296.32

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Solution

The fourth proportional to 20,745,086.40, 28,636,065.12 and 15,603,296.32 is: 21,538,450.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745,086.40 : 28,636,065.12 = 15,603,296.32 : x
  2. Step 2: Convert to fraction form
    20,745,086.40/28,636,065.12 = 15,603,296.32/x
  3. Step 3: Cross multiply
    20,745,086.40x = 28,636,065.12 × 15,603,296.32
  4. Step 4: Simplify right side
    20,745,086.40x = 446,817,009,506,176.38
  5. Step 5: Solve for x
    x = 446,817,009,506,176.38/20,745,086.40
  6. Step 6: Final answer
    x = 21,538,450.16

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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.