Home / 20,742,017.67-28,634,734.74-15,153,989.25

Finding the Fourth Proportional to 20,742,017.67, 28,634,734.74 and 15,153,989.25

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Solution

The fourth proportional to 20,742,017.67, 28,634,734.74 and 15,153,989.25 is: 20,920,359.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,017.67 : 28,634,734.74 = 15,153,989.25 : x
  2. Step 2: Convert to fraction form
    20,742,017.67/28,634,734.74 = 15,153,989.25/x
  3. Step 3: Cross multiply
    20,742,017.67x = 28,634,734.74 × 15,153,989.25
  4. Step 4: Simplify right side
    20,742,017.67x = 433,930,462,426,561.50
  5. Step 5: Solve for x
    x = 433,930,462,426,561.50/20,742,017.67
  6. Step 6: Final answer
    x = 20,920,359.31

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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.