Home / 27,867.80-38,457.63-15,931.46

Finding the Fourth Proportional to 27,867.80, 38,457.63 and 15,931.46

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Solution

The fourth proportional to 27,867.80, 38,457.63 and 15,931.46 is: 21,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,867.80 : 38,457.63 = 15,931.46 : x
  2. Step 2: Convert to fraction form
    27,867.80/38,457.63 = 15,931.46/x
  3. Step 3: Cross multiply
    27,867.80x = 38,457.63 × 15,931.46
  4. Step 4: Simplify right side
    27,867.80x = 612,686,001.75
  5. Step 5: Solve for x
    x = 612,686,001.75/27,867.80
  6. Step 6: Final answer
    x = 21,985.45

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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.