Home / 21,841,619.40-32,787,312.30-12,871,225.80

Finding the Fourth Proportional to 21,841,619.40, 32,787,312.30 and 12,871,225.80

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Solution

The fourth proportional to 21,841,619.40, 32,787,312.30 and 12,871,225.80 is: 19,321,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,841,619.40 : 32,787,312.30 = 12,871,225.80 : x
  2. Step 2: Convert to fraction form
    21,841,619.40/32,787,312.30 = 12,871,225.80/x
  3. Step 3: Cross multiply
    21,841,619.40x = 32,787,312.30 × 12,871,225.80
  4. Step 4: Simplify right side
    21,841,619.40x = 422,012,899,988,417.38
  5. Step 5: Solve for x
    x = 422,012,899,988,417.38/21,841,619.40
  6. Step 6: Final answer
    x = 19,321,502.32

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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.