Home / 13,585.90-18,748.90-7,617.40

Finding the Fourth Proportional to 13,585.90, 18,748.90 and 7,617.40

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Solution

The fourth proportional to 13,585.90, 18,748.90 and 7,617.40 is: 10,512.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.90 : 18,748.90 = 7,617.40 : x
  2. Step 2: Convert to fraction form
    13,585.90/18,748.90 = 7,617.40/x
  3. Step 3: Cross multiply
    13,585.90x = 18,748.90 × 7,617.40
  4. Step 4: Simplify right side
    13,585.90x = 142,817,870.86
  5. Step 5: Solve for x
    x = 142,817,870.86/13,585.90
  6. Step 6: Final answer
    x = 10,512.21

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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.