Home / 15,225.34-21,015.05-9,258.93

Finding the Fourth Proportional to 15,225.34, 21,015.05 and 9,258.93

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Solution

The fourth proportional to 15,225.34, 21,015.05 and 9,258.93 is: 12,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.34 : 21,015.05 = 9,258.93 : x
  2. Step 2: Convert to fraction form
    15,225.34/21,015.05 = 9,258.93/x
  3. Step 3: Cross multiply
    15,225.34x = 21,015.05 × 9,258.93
  4. Step 4: Simplify right side
    15,225.34x = 194,576,876.90
  5. Step 5: Solve for x
    x = 194,576,876.90/15,225.34
  6. Step 6: Final answer
    x = 12,779.81

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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.