Home / 13,583.79-18,746.10-7,615.53

Finding the Fourth Proportional to 13,583.79, 18,746.10 and 7,615.53

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Solution

The fourth proportional to 13,583.79, 18,746.10 and 7,615.53 is: 10,509.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.79 : 18,746.10 = 7,615.53 : x
  2. Step 2: Convert to fraction form
    13,583.79/18,746.10 = 7,615.53/x
  3. Step 3: Cross multiply
    13,583.79x = 18,746.10 × 7,615.53
  4. Step 4: Simplify right side
    13,583.79x = 142,761,486.93
  5. Step 5: Solve for x
    x = 142,761,486.93/13,583.79
  6. Step 6: Final answer
    x = 10,509.69

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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.