Home / 10,420,482.40-15,603,803.76-7,191,985.12

Finding the Fourth Proportional to 10,420,482.40, 15,603,803.76 and 7,191,985.12

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Solution

The fourth proportional to 10,420,482.40, 15,603,803.76 and 7,191,985.12 is: 10,769,398.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420,482.40 : 15,603,803.76 = 7,191,985.12 : x
  2. Step 2: Convert to fraction form
    10,420,482.40/15,603,803.76 = 7,191,985.12/x
  3. Step 3: Cross multiply
    10,420,482.40x = 15,603,803.76 × 7,191,985.12
  4. Step 4: Simplify right side
    10,420,482.40x = 112,222,324,457,320.05
  5. Step 5: Solve for x
    x = 112,222,324,457,320.05/10,420,482.40
  6. Step 6: Final answer
    x = 10,769,398.21

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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.