Home / 10,421.46-14,388.32-9,300.47

Finding the Fourth Proportional to 10,421.46, 14,388.32 and 9,300.47

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Solution

The fourth proportional to 10,421.46, 14,388.32 and 9,300.47 is: 12,840.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.46 : 14,388.32 = 9,300.47 : x
  2. Step 2: Convert to fraction form
    10,421.46/14,388.32 = 9,300.47/x
  3. Step 3: Cross multiply
    10,421.46x = 14,388.32 × 9,300.47
  4. Step 4: Simplify right side
    10,421.46x = 133,818,138.51
  5. Step 5: Solve for x
    x = 133,818,138.51/10,421.46
  6. Step 6: Final answer
    x = 12,840.63

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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.