Home / 30,628.17-42,275.75-18,528.66

Finding the Fourth Proportional to 30,628.17, 42,275.75 and 18,528.66

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Solution

The fourth proportional to 30,628.17, 42,275.75 and 18,528.66 is: 25,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.17 : 42,275.75 = 18,528.66 : x
  2. Step 2: Convert to fraction form
    30,628.17/42,275.75 = 18,528.66/x
  3. Step 3: Cross multiply
    30,628.17x = 42,275.75 × 18,528.66
  4. Step 4: Simplify right side
    30,628.17x = 783,312,905.35
  5. Step 5: Solve for x
    x = 783,312,905.35/30,628.17
  6. Step 6: Final answer
    x = 25,574.92

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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.