Home / 10,420.04-14,381.75-7,239.98

Finding the Fourth Proportional to 10,420.04, 14,381.75 and 7,239.98

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Solution

The fourth proportional to 10,420.04, 14,381.75 and 7,239.98 is: 9,992.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.04 : 14,381.75 = 7,239.98 : x
  2. Step 2: Convert to fraction form
    10,420.04/14,381.75 = 7,239.98/x
  3. Step 3: Cross multiply
    10,420.04x = 14,381.75 × 7,239.98
  4. Step 4: Simplify right side
    10,420.04x = 104,123,636.42
  5. Step 5: Solve for x
    x = 104,123,636.42/10,420.04
  6. Step 6: Final answer
    x = 9,992.63

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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.