Home / 13,140.28-19,699.98-7,587.34

Finding the Fourth Proportional to 13,140.28, 19,699.98 and 7,587.34

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Solution

The fourth proportional to 13,140.28, 19,699.98 and 7,587.34 is: 11,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.28 : 19,699.98 = 7,587.34 : x
  2. Step 2: Convert to fraction form
    13,140.28/19,699.98 = 7,587.34/x
  3. Step 3: Cross multiply
    13,140.28x = 19,699.98 × 7,587.34
  4. Step 4: Simplify right side
    13,140.28x = 149,470,446.25
  5. Step 5: Solve for x
    x = 149,470,446.25/13,140.28
  6. Step 6: Final answer
    x = 11,374.98

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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.