Home / 13,775.40-19,010.57-7,807.59

Finding the Fourth Proportional to 13,775.40, 19,010.57 and 7,807.59

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Solution

The fourth proportional to 13,775.40, 19,010.57 and 7,807.59 is: 10,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.40 : 19,010.57 = 7,807.59 : x
  2. Step 2: Convert to fraction form
    13,775.40/19,010.57 = 7,807.59/x
  3. Step 3: Cross multiply
    13,775.40x = 19,010.57 × 7,807.59
  4. Step 4: Simplify right side
    13,775.40x = 148,426,697.19
  5. Step 5: Solve for x
    x = 148,426,697.19/13,775.40
  6. Step 6: Final answer
    x = 10,774.76

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1.5x scale

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.