Home / 10,578.60-15,875.10-6,191.40

Finding the Fourth Proportional to 10,578.60, 15,875.10 and 6,191.40

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Solution

The fourth proportional to 10,578.60, 15,875.10 and 6,191.40 is: 9,291.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,578.60 : 15,875.10 = 6,191.40 : x
  2. Step 2: Convert to fraction form
    10,578.60/15,875.10 = 6,191.40/x
  3. Step 3: Cross multiply
    10,578.60x = 15,875.10 × 6,191.40
  4. Step 4: Simplify right side
    10,578.60x = 98,289,094.14
  5. Step 5: Solve for x
    x = 98,289,094.14/10,578.60
  6. Step 6: Final answer
    x = 9,291.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.