Home / 30,530.64-42,136.02-18,595.71

Finding the Fourth Proportional to 30,530.64, 42,136.02 and 18,595.71

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Solution

The fourth proportional to 30,530.64, 42,136.02 and 18,595.71 is: 25,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,530.64 : 42,136.02 = 18,595.71 : x
  2. Step 2: Convert to fraction form
    30,530.64/42,136.02 = 18,595.71/x
  3. Step 3: Cross multiply
    30,530.64x = 42,136.02 × 18,595.71
  4. Step 4: Simplify right side
    30,530.64x = 783,549,208.47
  5. Step 5: Solve for x
    x = 783,549,208.47/30,530.64
  6. Step 6: Final answer
    x = 25,664.36

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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.