Home / 30,587.41-42,222.63-21,681.46

Finding the Fourth Proportional to 30,587.41, 42,222.63 and 21,681.46

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Solution

The fourth proportional to 30,587.41, 42,222.63 and 21,681.46 is: 29,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587.41 : 42,222.63 = 21,681.46 : x
  2. Step 2: Convert to fraction form
    30,587.41/42,222.63 = 21,681.46/x
  3. Step 3: Cross multiply
    30,587.41x = 42,222.63 × 21,681.46
  4. Step 4: Simplify right side
    30,587.41x = 915,448,263.44
  5. Step 5: Solve for x
    x = 915,448,263.44/30,587.41
  6. Step 6: Final answer
    x = 29,928.92

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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.