Home / 30,903.24-42,643.28-18,967.08

Finding the Fourth Proportional to 30,903.24, 42,643.28 and 18,967.08

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Solution

The fourth proportional to 30,903.24, 42,643.28 and 18,967.08 is: 26,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903.24 : 42,643.28 = 18,967.08 : x
  2. Step 2: Convert to fraction form
    30,903.24/42,643.28 = 18,967.08/x
  3. Step 3: Cross multiply
    30,903.24x = 42,643.28 × 18,967.08
  4. Step 4: Simplify right side
    30,903.24x = 808,818,503.22
  5. Step 5: Solve for x
    x = 808,818,503.22/30,903.24
  6. Step 6: Final answer
    x = 26,172.61

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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.