Home / 10,897.46-15,038.35-6,421.40

Finding the Fourth Proportional to 10,897.46, 15,038.35 and 6,421.40

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Solution

The fourth proportional to 10,897.46, 15,038.35 and 6,421.40 is: 8,861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,897.46 : 15,038.35 = 6,421.40 : x
  2. Step 2: Convert to fraction form
    10,897.46/15,038.35 = 6,421.40/x
  3. Step 3: Cross multiply
    10,897.46x = 15,038.35 × 6,421.40
  4. Step 4: Simplify right side
    10,897.46x = 96,567,169.44
  5. Step 5: Solve for x
    x = 96,567,169.44/10,897.46
  6. Step 6: Final answer
    x = 8,861.44

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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.