Home / 13,455.95-18,569.33-7,487.87

Finding the Fourth Proportional to 13,455.95, 18,569.33 and 7,487.87

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Solution

The fourth proportional to 13,455.95, 18,569.33 and 7,487.87 is: 10,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.95 : 18,569.33 = 7,487.87 : x
  2. Step 2: Convert to fraction form
    13,455.95/18,569.33 = 7,487.87/x
  3. Step 3: Cross multiply
    13,455.95x = 18,569.33 × 7,487.87
  4. Step 4: Simplify right side
    13,455.95x = 139,044,598.74
  5. Step 5: Solve for x
    x = 139,044,598.74/13,455.95
  6. Step 6: Final answer
    x = 10,333.32

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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.