Home / 10,688.09-14,750.12-6,440.48

Finding the Fourth Proportional to 10,688.09, 14,750.12 and 6,440.48

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Solution

The fourth proportional to 10,688.09, 14,750.12 and 6,440.48 is: 8,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,688.09 : 14,750.12 = 6,440.48 : x
  2. Step 2: Convert to fraction form
    10,688.09/14,750.12 = 6,440.48/x
  3. Step 3: Cross multiply
    10,688.09x = 14,750.12 × 6,440.48
  4. Step 4: Simplify right side
    10,688.09x = 94,997,852.86
  5. Step 5: Solve for x
    x = 94,997,852.86/10,688.09
  6. Step 6: Final answer
    x = 8,888.20

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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.