Home / 15,386.60-21,237.86-9,101.16

Finding the Fourth Proportional to 15,386.60, 21,237.86 and 9,101.16

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Solution

The fourth proportional to 15,386.60, 21,237.86 and 9,101.16 is: 12,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.60 : 21,237.86 = 9,101.16 : x
  2. Step 2: Convert to fraction form
    15,386.60/21,237.86 = 9,101.16/x
  3. Step 3: Cross multiply
    15,386.60x = 21,237.86 × 9,101.16
  4. Step 4: Simplify right side
    15,386.60x = 193,289,161.92
  5. Step 5: Solve for x
    x = 193,289,161.92/15,386.60
  6. Step 6: Final answer
    x = 12,562.18

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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.