Home / 10,421.10-14,387.67-6,444.45

Finding the Fourth Proportional to 10,421.10, 14,387.67 and 6,444.45

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Solution

The fourth proportional to 10,421.10, 14,387.67 and 6,444.45 is: 8,897.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.10 : 14,387.67 = 6,444.45 : x
  2. Step 2: Convert to fraction form
    10,421.10/14,387.67 = 6,444.45/x
  3. Step 3: Cross multiply
    10,421.10x = 14,387.67 × 6,444.45
  4. Step 4: Simplify right side
    10,421.10x = 92,720,619.93
  5. Step 5: Solve for x
    x = 92,720,619.93/10,421.10
  6. Step 6: Final answer
    x = 8,897.39

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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.