Home / 13,487.61-18,612.93-7,519.50

Finding the Fourth Proportional to 13,487.61, 18,612.93 and 7,519.50

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Solution

The fourth proportional to 13,487.61, 18,612.93 and 7,519.50 is: 10,376.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.61 : 18,612.93 = 7,519.50 : x
  2. Step 2: Convert to fraction form
    13,487.61/18,612.93 = 7,519.50/x
  3. Step 3: Cross multiply
    13,487.61x = 18,612.93 × 7,519.50
  4. Step 4: Simplify right side
    13,487.61x = 139,959,927.14
  5. Step 5: Solve for x
    x = 139,959,927.14/13,487.61
  6. Step 6: Final answer
    x = 10,376.93

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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.