Home / 12,430.48-17,135.76-10,188.64

Finding the Fourth Proportional to 12,430.48, 17,135.76 and 10,188.64

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Solution

The fourth proportional to 12,430.48, 17,135.76 and 10,188.64 is: 14,045.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.48 : 17,135.76 = 10,188.64 : x
  2. Step 2: Convert to fraction form
    12,430.48/17,135.76 = 10,188.64/x
  3. Step 3: Cross multiply
    12,430.48x = 17,135.76 × 10,188.64
  4. Step 4: Simplify right side
    12,430.48x = 174,590,089.77
  5. Step 5: Solve for x
    x = 174,590,089.77/12,430.48
  6. Step 6: Final answer
    x = 14,045.32

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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.