Home / 10,402.89-14,363.51-6,429.45

Finding the Fourth Proportional to 10,402.89, 14,363.51 and 6,429.45

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Solution

The fourth proportional to 10,402.89, 14,363.51 and 6,429.45 is: 8,877.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,402.89 : 14,363.51 = 6,429.45 : x
  2. Step 2: Convert to fraction form
    10,402.89/14,363.51 = 6,429.45/x
  3. Step 3: Cross multiply
    10,402.89x = 14,363.51 × 6,429.45
  4. Step 4: Simplify right side
    10,402.89x = 92,349,437.22
  5. Step 5: Solve for x
    x = 92,349,437.22/10,402.89
  6. Step 6: Final answer
    x = 8,877.29

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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.