Home / 30,925.52-42,656.04-21,487.28

Finding the Fourth Proportional to 30,925.52, 42,656.04 and 21,487.28

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Solution

The fourth proportional to 30,925.52, 42,656.04 and 21,487.28 is: 29,637.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,925.52 : 42,656.04 = 21,487.28 : x
  2. Step 2: Convert to fraction form
    30,925.52/42,656.04 = 21,487.28/x
  3. Step 3: Cross multiply
    30,925.52x = 42,656.04 × 21,487.28
  4. Step 4: Simplify right side
    30,925.52x = 916,562,275.17
  5. Step 5: Solve for x
    x = 916,562,275.17/30,925.52
  6. Step 6: Final answer
    x = 29,637.73

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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.