Home / 38,870.47-53,640.62-21,642.67

Finding the Fourth Proportional to 38,870.47, 53,640.62 and 21,642.67

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Solution

The fourth proportional to 38,870.47, 53,640.62 and 21,642.67 is: 29,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,870.47 : 53,640.62 = 21,642.67 : x
  2. Step 2: Convert to fraction form
    38,870.47/53,640.62 = 21,642.67/x
  3. Step 3: Cross multiply
    38,870.47x = 53,640.62 × 21,642.67
  4. Step 4: Simplify right side
    38,870.47x = 1,160,926,023.16
  5. Step 5: Solve for x
    x = 1,160,926,023.16/38,870.47
  6. Step 6: Final answer
    x = 29,866.53

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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.