Home / 12,430.54-17,150.28-7,124.32

Finding the Fourth Proportional to 12,430.54, 17,150.28 and 7,124.32

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Solution

The fourth proportional to 12,430.54, 17,150.28 and 7,124.32 is: 9,829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.54 : 17,150.28 = 7,124.32 : x
  2. Step 2: Convert to fraction form
    12,430.54/17,150.28 = 7,124.32/x
  3. Step 3: Cross multiply
    12,430.54x = 17,150.28 × 7,124.32
  4. Step 4: Simplify right side
    12,430.54x = 122,184,082.81
  5. Step 5: Solve for x
    x = 122,184,082.81/12,430.54
  6. Step 6: Final answer
    x = 9,829.35

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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.