Home / 14,316.48-21,459-6,915.72

Finding the Fourth Proportional to 14,316.48, 21,459 and 6,915.72

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Solution

The fourth proportional to 14,316.48, 21,459 and 6,915.72 is: 10,365.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,316.48 : 21,459 = 6,915.72 : x
  2. Step 2: Convert to fraction form
    14,316.48/21,459 = 6,915.72/x
  3. Step 3: Cross multiply
    14,316.48x = 21,459 × 6,915.72
  4. Step 4: Simplify right side
    14,316.48x = 148,404,435.48
  5. Step 5: Solve for x
    x = 148,404,435.48/14,316.48
  6. Step 6: Final answer
    x = 10,365.99

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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.