Home / 30,531.48-45,795.72-17,888.40

Finding the Fourth Proportional to 30,531.48, 45,795.72 and 17,888.40

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Solution

The fourth proportional to 30,531.48, 45,795.72 and 17,888.40 is: 26,831.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.48 : 45,795.72 = 17,888.40 : x
  2. Step 2: Convert to fraction form
    30,531.48/45,795.72 = 17,888.40/x
  3. Step 3: Cross multiply
    30,531.48x = 45,795.72 × 17,888.40
  4. Step 4: Simplify right side
    30,531.48x = 819,212,157.65
  5. Step 5: Solve for x
    x = 819,212,157.65/30,531.48
  6. Step 6: Final answer
    x = 26,831.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.