Home / 9,430.48-13,005.12-7,188.40

Finding the Fourth Proportional to 9,430.48, 13,005.12 and 7,188.40

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Solution

The fourth proportional to 9,430.48, 13,005.12 and 7,188.40 is: 9,913.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,430.48 : 13,005.12 = 7,188.40 : x
  2. Step 2: Convert to fraction form
    9,430.48/13,005.12 = 7,188.40/x
  3. Step 3: Cross multiply
    9,430.48x = 13,005.12 × 7,188.40
  4. Step 4: Simplify right side
    9,430.48x = 93,486,004.61
  5. Step 5: Solve for x
    x = 93,486,004.61/9,430.48
  6. Step 6: Final answer
    x = 9,913.18

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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.