Home / 13,657.61-18,848.60-7,688.93

Finding the Fourth Proportional to 13,657.61, 18,848.60 and 7,688.93

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Solution

The fourth proportional to 13,657.61, 18,848.60 and 7,688.93 is: 10,611.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.61 : 18,848.60 = 7,688.93 : x
  2. Step 2: Convert to fraction form
    13,657.61/18,848.60 = 7,688.93/x
  3. Step 3: Cross multiply
    13,657.61x = 18,848.60 × 7,688.93
  4. Step 4: Simplify right side
    13,657.61x = 144,925,462.14
  5. Step 5: Solve for x
    x = 144,925,462.14/13,657.61
  6. Step 6: Final answer
    x = 10,611.33

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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.