Home / 10,856.60-16,280.04-4,279.40

Finding the Fourth Proportional to 10,856.60, 16,280.04 and 4,279.40

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Solution

The fourth proportional to 10,856.60, 16,280.04 and 4,279.40 is: 6,417.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.60 : 16,280.04 = 4,279.40 : x
  2. Step 2: Convert to fraction form
    10,856.60/16,280.04 = 4,279.40/x
  3. Step 3: Cross multiply
    10,856.60x = 16,280.04 × 4,279.40
  4. Step 4: Simplify right side
    10,856.60x = 69,668,803.18
  5. Step 5: Solve for x
    x = 69,668,803.18/10,856.60
  6. Step 6: Final answer
    x = 6,417.18

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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.