Home / 10,385.95-14,332.51-6,405.47

Finding the Fourth Proportional to 10,385.95, 14,332.51 and 6,405.47

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Solution

The fourth proportional to 10,385.95, 14,332.51 and 6,405.47 is: 8,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.95 : 14,332.51 = 6,405.47 : x
  2. Step 2: Convert to fraction form
    10,385.95/14,332.51 = 6,405.47/x
  3. Step 3: Cross multiply
    10,385.95x = 14,332.51 × 6,405.47
  4. Step 4: Simplify right side
    10,385.95x = 91,806,462.83
  5. Step 5: Solve for x
    x = 91,806,462.83/10,385.95
  6. Step 6: Final answer
    x = 8,839.49

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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.