Finding the Fourth Proportional to 27,886,991.42, 38,484,981.58 and 15,497,607.03
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Solution
The fourth proportional to 27,886,991.42, 38,484,981.58 and 15,497,607.03 is: 21,387,216.43
Step by Step Solution
- Step 1: Write the proportion equation
27,886,991.42 : 38,484,981.58 = 15,497,607.03 : x - Step 2: Convert to fraction form
27,886,991.42/38,484,981.58 = 15,497,607.03/x - Step 3: Cross multiply
27,886,991.42x = 38,484,981.58 × 15,497,607.03 - Step 4: Simplify right side
27,886,991.42x = 596,425,121,083,628.50 - Step 5: Solve for x
x = 596,425,121,083,628.50/27,886,991.42 - Step 6: Final answer
x = 21,387,216.43
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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.