Home / 10,897.83-15,038.87-6,421.77

Finding the Fourth Proportional to 10,897.83, 15,038.87 and 6,421.77

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Solution

The fourth proportional to 10,897.83, 15,038.87 and 6,421.77 is: 8,861.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,897.83 : 15,038.87 = 6,421.77 : x
  2. Step 2: Convert to fraction form
    10,897.83/15,038.87 = 6,421.77/x
  3. Step 3: Cross multiply
    10,897.83x = 15,038.87 × 6,421.77
  4. Step 4: Simplify right side
    10,897.83x = 96,576,132.09
  5. Step 5: Solve for x
    x = 96,576,132.09/10,897.83
  6. Step 6: Final answer
    x = 8,861.96

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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.