Home / 13,585.20-18,746.28-7,615.50

Finding the Fourth Proportional to 13,585.20, 18,746.28 and 7,615.50

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Solution

The fourth proportional to 13,585.20, 18,746.28 and 7,615.50 is: 10,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.20 : 18,746.28 = 7,615.50 : x
  2. Step 2: Convert to fraction form
    13,585.20/18,746.28 = 7,615.50/x
  3. Step 3: Cross multiply
    13,585.20x = 18,746.28 × 7,615.50
  4. Step 4: Simplify right side
    13,585.20x = 142,762,295.34
  5. Step 5: Solve for x
    x = 142,762,295.34/13,585.20
  6. Step 6: Final answer
    x = 10,508.66

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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.