Home / 30,485.14-42,073.35-18,547.76

Finding the Fourth Proportional to 30,485.14, 42,073.35 and 18,547.76

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Solution

The fourth proportional to 30,485.14, 42,073.35 and 18,547.76 is: 25,598.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.14 : 42,073.35 = 18,547.76 : x
  2. Step 2: Convert to fraction form
    30,485.14/42,073.35 = 18,547.76/x
  3. Step 3: Cross multiply
    30,485.14x = 42,073.35 × 18,547.76
  4. Step 4: Simplify right side
    30,485.14x = 780,366,398.20
  5. Step 5: Solve for x
    x = 780,366,398.20/30,485.14
  6. Step 6: Final answer
    x = 25,598.26

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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.