Home / 15,761,384.19-21,742,439.56-12,824,480.67

Finding the Fourth Proportional to 15,761,384.19, 21,742,439.56 and 12,824,480.67

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Solution

The fourth proportional to 15,761,384.19, 21,742,439.56 and 12,824,480.67 is: 17,691,053.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761,384.19 : 21,742,439.56 = 12,824,480.67 : x
  2. Step 2: Convert to fraction form
    15,761,384.19/21,742,439.56 = 12,824,480.67/x
  3. Step 3: Cross multiply
    15,761,384.19x = 21,742,439.56 × 12,824,480.67
  4. Step 4: Simplify right side
    15,761,384.19x = 278,835,495,747,151.06
  5. Step 5: Solve for x
    x = 278,835,495,747,151.06/15,761,384.19
  6. Step 6: Final answer
    x = 17,691,053.81

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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.