Home / 38,715.37-53,426.18-21,718.19

Finding the Fourth Proportional to 38,715.37, 53,426.18 and 21,718.19

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Solution

The fourth proportional to 38,715.37, 53,426.18 and 21,718.19 is: 29,970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,715.37 : 53,426.18 = 21,718.19 : x
  2. Step 2: Convert to fraction form
    38,715.37/53,426.18 = 21,718.19/x
  3. Step 3: Cross multiply
    38,715.37x = 53,426.18 × 21,718.19
  4. Step 4: Simplify right side
    38,715.37x = 1,160,320,116.08
  5. Step 5: Solve for x
    x = 1,160,320,116.08/38,715.37
  6. Step 6: Final answer
    x = 29,970.53

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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.