Home / 30,889.47-42,604.95-19,560.81

Finding the Fourth Proportional to 30,889.47, 42,604.95 and 19,560.81

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Solution

The fourth proportional to 30,889.47, 42,604.95 and 19,560.81 is: 26,979.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,889.47 : 42,604.95 = 19,560.81 : x
  2. Step 2: Convert to fraction form
    30,889.47/42,604.95 = 19,560.81/x
  3. Step 3: Cross multiply
    30,889.47x = 42,604.95 × 19,560.81
  4. Step 4: Simplify right side
    30,889.47x = 833,387,332.01
  5. Step 5: Solve for x
    x = 833,387,332.01/30,889.47
  6. Step 6: Final answer
    x = 26,979.66

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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.