Home / 30,587.60-42,212.40-17,158.16

Finding the Fourth Proportional to 30,587.60, 42,212.40 and 17,158.16

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Solution

The fourth proportional to 30,587.60, 42,212.40 and 17,158.16 is: 23,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587.60 : 42,212.40 = 17,158.16 : x
  2. Step 2: Convert to fraction form
    30,587.60/42,212.40 = 17,158.16/x
  3. Step 3: Cross multiply
    30,587.60x = 42,212.40 × 17,158.16
  4. Step 4: Simplify right side
    30,587.60x = 724,287,113.18
  5. Step 5: Solve for x
    x = 724,287,113.18/30,587.60
  6. Step 6: Final answer
    x = 23,679.11

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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.