Home / 13,558.74-18,710.19-7,590.30

Finding the Fourth Proportional to 13,558.74, 18,710.19 and 7,590.30

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Solution

The fourth proportional to 13,558.74, 18,710.19 and 7,590.30 is: 10,474.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.74 : 18,710.19 = 7,590.30 : x
  2. Step 2: Convert to fraction form
    13,558.74/18,710.19 = 7,590.30/x
  3. Step 3: Cross multiply
    13,558.74x = 18,710.19 × 7,590.30
  4. Step 4: Simplify right side
    13,558.74x = 142,015,955.16
  5. Step 5: Solve for x
    x = 142,015,955.16/13,558.74
  6. Step 6: Final answer
    x = 10,474.13

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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.