Home / 30,655.32-42,292.08-19,321.80

Finding the Fourth Proportional to 30,655.32, 42,292.08 and 19,321.80

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Solution

The fourth proportional to 30,655.32, 42,292.08 and 19,321.80 is: 26,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.32 : 42,292.08 = 19,321.80 : x
  2. Step 2: Convert to fraction form
    30,655.32/42,292.08 = 19,321.80/x
  3. Step 3: Cross multiply
    30,655.32x = 42,292.08 × 19,321.80
  4. Step 4: Simplify right side
    30,655.32x = 817,159,111.34
  5. Step 5: Solve for x
    x = 817,159,111.34/30,655.32
  6. Step 6: Final answer
    x = 26,656.36

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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.