Home / 13,688.48-18,899.16-12,746.60

Finding the Fourth Proportional to 13,688.48, 18,899.16 and 12,746.60

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Solution

The fourth proportional to 13,688.48, 18,899.16 and 12,746.60 is: 17,598.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.48 : 18,899.16 = 12,746.60 : x
  2. Step 2: Convert to fraction form
    13,688.48/18,899.16 = 12,746.60/x
  3. Step 3: Cross multiply
    13,688.48x = 18,899.16 × 12,746.60
  4. Step 4: Simplify right side
    13,688.48x = 240,900,032.86
  5. Step 5: Solve for x
    x = 240,900,032.86/13,688.48
  6. Step 6: Final answer
    x = 17,598.74

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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.