Home / 14,715.48-20,307.51-8,427.72

Finding the Fourth Proportional to 14,715.48, 20,307.51 and 8,427.72

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Solution

The fourth proportional to 14,715.48, 20,307.51 and 8,427.72 is: 11,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,715.48 : 20,307.51 = 8,427.72 : x
  2. Step 2: Convert to fraction form
    14,715.48/20,307.51 = 8,427.72/x
  3. Step 3: Cross multiply
    14,715.48x = 20,307.51 × 8,427.72
  4. Step 4: Simplify right side
    14,715.48x = 171,146,008.18
  5. Step 5: Solve for x
    x = 171,146,008.18/14,715.48
  6. Step 6: Final answer
    x = 11,630.34

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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.