Home / 13,965.40-20,948.10-9,810.10

Finding the Fourth Proportional to 13,965.40, 20,948.10 and 9,810.10

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Solution

The fourth proportional to 13,965.40, 20,948.10 and 9,810.10 is: 14,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.40 : 20,948.10 = 9,810.10 : x
  2. Step 2: Convert to fraction form
    13,965.40/20,948.10 = 9,810.10/x
  3. Step 3: Cross multiply
    13,965.40x = 20,948.10 × 9,810.10
  4. Step 4: Simplify right side
    13,965.40x = 205,502,955.81
  5. Step 5: Solve for x
    x = 205,502,955.81/13,965.40
  6. Step 6: Final answer
    x = 14,715.15

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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.